'gcc-3_2-branch'.
From-SVN: r60937
--- /dev/null
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE html
+ PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+ <meta name="AUTHOR" content="bkoz@gcc.gnu.org (Benjamin Kosnik)" />
+ <meta name="KEYWORDS" content="c++, libstdc++, gdb, g++, debug" />
+ <meta name="DESCRIPTION" content="Debugging C++ binaries" />
+ <meta name="GENERATOR" content="vi and ten fingers" />
+ <title>Debugging schemes and strategies</title>
+<link rel="StyleSheet" href="lib3styles.css" />
+</head>
+<body>
+
+<h1 class="centered"><a name="top">Debugging schemes and strategies</a></h1>
+
+<p class="fineprint"><em>
+<p>The latest version of this document is always available at
+ <a href="http://gcc.gnu.org/onlinedocs/libstdc++/debug.html">
+ http://gcc.gnu.org/onlinedocs/libstdc++/debug.html</a>.
+</p>
+
+<p>To the <a href="http://gcc.gnu.org/libstdc++/">libstdc++-v3 homepage</a>.
+</p>
+</em></p>
+
+<!-- ####################################################### -->
+<hr />
+<p>There are numerous things that can be done to improve the ease with
+ which C++ binaries are debugged when using the GNU C++
+ tool chain. Here are some things to keep in mind when debugging C++
+ code with GNU tools.
+</p>
+
+<h3 class="left"><a name="g++">Compiler flags determine debug info</a></h3>
+<p>The default optimizations and debug flags for a libstdc++ build are
+ <code>-g -O2</code>. However, both debug and optimization flags can
+ be varied to change debugging characteristics. For instance,
+ turning off all optimization via the <code>-g -O0</code> flag will
+ disable inlining, so that stepping through all functions, including
+ inlined constructors and destructors, is possible. Or, the debug
+ format that the compiler and debugger use to communicate
+ information about source constructs can be changed via <code>
+ -gdwarf-2 </code> or <code> -gstabs </code> flags: some debugging
+ formats permit more expressive type and scope information to be
+ shown in gdb.
+ The default debug information for a particular platform can be
+ identified via the value set by the PREFERRED_DEBUGGING_TYPE macro
+ in the gcc sources.
+</p>
+
+<p>Many other options are available: please see
+<a href=http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html#Debugging%20Options> "Options for Debugging Your Program" </a>
+ in Using the GNU Compiler Collection (GCC) for a complete list.
+</p>
+
+
+<h3 class="left"><a name="lib">Using special flags to make a debug binary</a></h3>
+<p>There are two ways to build libstdc++ with debug flags. The first
+ is to run make from the toplevel in a freshly-configured tree with
+ specialized debug <code>CXXFLAGS</code>, as in <dd> <code> make
+ CXXFLAGS='-g3 -O0' all </code></dd>
+</p>
+
+<p>This quick and dirty approach is often sufficient for quick
+ debugging tasks, but the lack of state can be confusing in the long
+ term.
+</p>
+
+<p>A second approach is to use the configuration flags
+</p>
+
+ <dd><code>--enable-debug</code></dd>
+
+<p>and perhaps</p>
+
+ <dd><code>--enable-debug-flags='...'</code></dd>
+
+<p>to create a separate debug build. Both the normal build and the
+ debug build will persist, without having to specify
+ <code>CXXFLAGS</code>, and the debug library will be installed in a
+ separate directory tree, in <code>(prefix)/lib/debug</code>. For
+ more information, look at the configuration options document
+<a href=http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>here</a>
+</p>
+
+
+<h3 class="left"><a name="mem">Tips for memory leak hunting</a></h3>
+
+<p>There are various third party memory tracing and debug utilities
+ that can be used to provide detailed memory allocation information
+ about C++ code. An exhaustive list of tools is not going to be
+ attempted, but include <code>mtrace</code>, <code>valgrind</code>,
+ <code>mudflap</code>, and <code>purify</code>. Also highly
+ recommended are <code>libcwd</code> and some other one that I
+ forget right now.
+</p>
+
+<p>Regardless of the memory debugging tool being used, there is one
+ thing of great importance to keep in mind when debugging C++ code
+ that uses <code>new</code> and <code>delete</code>:
+ there are different kinds of allocation schemes that can be used by
+ <code> std::allocator </code>. For implementation details, see this
+ <a href=http://gcc.gnu.org/onlinedocs/libstdc++/ext/howto.html#3>
+ document </a> and look specifically for <code>GLIBCPP_FORCE_NEW</code>.
+</p>
+
+<p>In a nutshell, the default allocator used by <code>
+ std::allocator</code> is a high-performance pool allocator, and can
+ give the mistaken impression that memory is being leaked, when in
+ reality the memory is reclaimed after program termination.
+</p>
+
+<p>For valgrind, there are some specific items to keep in mind. First
+ of all, use a version of valgrind that will work with current GNU
+ C++ tools: the first that can do this is valgrind 1.0.4, but later
+ versions should work at least as well. Second of all, use a
+ completely unoptimized build to avoid confusing valgrind. Third,
+ use GLIBCPP_FORCE_NEW to keep extraneous pool allocation noise from
+ cluttering debug information.
+</p>
+
+<p>Fourth, it may be necessary to force deallocation in other
+ libraries as well, namely the "C" library. On linux, this can be
+ accomplished with the appropriate use of the
+ <code>__cxa_atexit</code> or <code>atexit</code> functions.
+</p>
+
+<pre>
+ #include <cstdlib>
+
+ extern "C" void __libc_freeres(void);
+
+ void do_something() { }
+
+ int main()
+ {
+ atexit(__libc_freeres);
+ do_something();
+ return 0;
+ }
+</pre>
+
+
+<p>or, using <code>__cxa_atexit</code>:</p>
+
+<pre>
+ extern "C" void __libc_freeres(void);
+ extern "C" int __cxa_atexit(void (*func) (void *), void *arg, void *d);
+
+ void do_something() { }
+
+ int main()
+ {
+ extern void* __dso_handle __attribute__ ((__weak__));
+ __cxa_atexit((void (*) (void *)) __libc_freeres, NULL,
+ &__dso_handle ? __dso_handle : NULL);
+ do_test();
+ return 0;
+ }
+</pre>
+
+<p>Suggested valgrind flags, given the suggestions above about setting
+ up the runtime environment, library, and test file, might be:
+
+ <dd><code>valgrind -v --num-callers=20 --leak-check=yes
+ --leak-resolution=high --show-reachable=yes a.out</code></dd>
+</p>
+
+
+<h3 class="left"><a name="gdb">Some gdb strategies</a></h3>
+<p>Many options are available for gdb itself: please see <a
+ href=http://sources.redhat.com/gdb/current/onlinedocs/gdb_13.html#SEC109>
+ "GDB features for C++" </a> in the gdb documentation. Also
+ recommended: the other parts of this manual.
+</p>
+
+<p>These settings can either be switched on in at the gdb command
+ line, or put into a .gdbint file to establish default debugging
+ characteristics, like so:
+</p>
+
+<pre>
+ set print pretty on
+ set print object on
+ set print static-members on
+ set print vtbl on
+ set print demangle on
+ set demangle-style gnu-v3
+</pre>
+
+
+<h3 class="left"><a name="verbterm">Tracking uncaught exceptions</a></h3>
+<p>The <a href="19_diagnostics/howto.html#4">verbose termination handler</a>
+ gives information about uncaught exceptions which are killing the
+ program. It is described in the linked-to page.
+</p>
+
+
+<p>Return <a href="#top">to the top of the page</a> or
+ <a href="http://gcc.gnu.org/libstdc++/">to the libstdc++ homepage</a>.
+</p>
+
+
+<!-- ####################################################### -->
+
+<hr />
+<p class="fineprint"><em>
+See <a href="17_intro/license.html">license.html</a> for copying conditions.
+Comments and suggestions are welcome, and may be sent to
+<a href="mailto:libstdc++@gcc.gnu.org">the libstdc++ mailing list</a>.
+</em></p>
+
+
+</body>
+</html>
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+// minimal sanity check
+bool test01() {
+
+ bool test = true;
+
+ // Integral Types:
+ bool b1 = false;
+ bool b2 = false;
+ short s1 = 0;
+ int i1 = 0;
+ long l1 = 0;
+ unsigned short us1 = 0;
+ unsigned int ui1 = 0;
+ unsigned long ul1 = 0;
+
+ // Floating-point Types:
+ float f1 = 0;
+ double d1 = 0;
+ long double ld1 = 0;
+
+ // process alphanumeric versions of bool values
+ std::ios_base::fmtflags fmt = is_02.flags();
+ bool testfmt = fmt & std::ios_base::boolalpha;
+ is_02.setf(std::ios_base::boolalpha);
+ fmt = is_02.flags();
+ testfmt = fmt & std::ios_base::boolalpha;
+ is_02 >> b1;
+ VERIFY( b1 == 1 );
+ is_02 >> b1;
+ VERIFY( b1 == 0 );
+
+ // process numeric versions of of bool values
+ is_02.unsetf(std::ios_base::boolalpha);
+ fmt = is_02.flags();
+ testfmt = fmt & std::ios_base::boolalpha;
+ is_02 >> b1;
+ VERIFY( b1 == 0 );
+ is_02 >> b1;
+ VERIFY( b1 == 1 );
+
+ // is_03 == "-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5"
+ is_03 >> l1;
+ VERIFY( l1 == -19999999 );
+ is_03 >> ul1;
+ VERIFY( ul1 == 777777 );
+ is_03 >> i1;
+ VERIFY( i1 == -234234 );
+ is_03 >> ui1;
+ VERIFY( ui1 == 233 );
+ is_03 >> s1;
+ VERIFY( s1 == -234 );
+ is_03 >> us1;
+ VERIFY( us1 == 33 );
+ is_03 >> b1;
+ VERIFY( b1 == 1 );
+ is_03 >> ld1;
+ VERIFY( ld1 == 66300.25 );
+ is_03 >> d1;
+ VERIFY( d1 == .315 );
+ is_03 >> f1;
+ VERIFY( f1 == 1.5 );
+
+ is_04 >> std::hex >> i1;
+ std::printf ("%d %d %d\n", i1, i1 == 0x123, test);
+ VERIFY( i1 == 0x123 );
+ std::printf ("%d %d %d\n", i1, i1 == 0x123, test);
+
+ // test void pointers
+ int i = 55;
+ void* po = &i;
+ void* pi;
+
+ ss_01 << po;
+ ss_01 >> pi;
+ std::printf ("%x %x\n", pi, po);
+ VERIFY( po == pi );
+
+#ifdef DEBUG_ASSERT
+ assert(test);
+#endif
+
+ return test;
+}
+
+int main()
+{
+ test01();
+ return 0;
+}
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+// elaborated test for ints
+bool test02() {
+
+ bool test = true;
+ const std::string str_01("20000AB");
+ std::stringbuf strb_01(str_01, std::ios_base::in);
+ std::istream is(&strb_01);
+
+ int n = 15;
+ is >> n;
+ VERIFY( n == 20000 );
+ char c = is.peek();
+ VERIFY( c == 65 );
+
+#ifdef DEBUG_ASSERT
+ assert(test);
+#endif
+
+ return test;
+}
+
+int main()
+{
+ test02();
+ return 0;
+}
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+bool test03()
+{
+ std::stringbuf sbuf;
+ std::istream istr(&sbuf);
+ std::ostream ostr(&sbuf);
+
+ bool test = true;
+ long l01;
+ ostr << "12220101";
+ istr >> l01; // _M_in_end set completely incorrectly here.
+ VERIFY( l01 == 12220101 );
+ VERIFY( istr.rdstate() == std::ios_base::eofbit );
+
+#ifdef DEBUG_ASSERT
+ assert(test);
+#endif
+
+ return test;
+}
+
+int main()
+{
+ test03();
+ return 0;
+}
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+// http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00081.html
+// Jim Parsons
+void test06()
+{
+ // default locale, grouping is turned off
+ bool test = true;
+ unsigned int h4, h3, h2;
+ char c;
+ std::string s("205,199,144");
+ std::istringstream is(s);
+
+ is >> h4; // 205
+ VERIFY( h4 == 205 );
+ is >> c; // ','
+ VERIFY( c == ',' );
+
+ is >> h4; // 199
+ VERIFY( h4 == 199 );
+ is >> c; // ','
+ VERIFY( c == ',' );
+
+ is >> h4; // 144
+ VERIFY( is.rdstate() == std::ios_base::eofbit );
+ VERIFY( h4 == 144 );
+ is >> c; // EOF
+ VERIFY( c == ',' );
+ VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
+
+#ifdef DEBUG_ASSERT
+ assert(test);
+#endif
+}
+
+int main()
+{
+ test06();
+ return 0;
+}
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+namespace std {
+ class test_numpunct1 : public numpunct<char>
+ {
+ protected:
+ string
+ do_grouping() const
+ { return string(1, '\003'); }
+ };
+} // namespace std
+
+void test07()
+{
+ // manufactured locale, grouping is turned on
+ bool test = true;
+ unsigned int h4 = 0, h3 = 0, h2 = 0;
+ float f1 = 0.0;
+ const std::string s1("205,199 23,445.25 1,024,365 123,22,24");
+ std::istringstream is(s1);
+ is.imbue(std::locale(std::locale(), new std::test_numpunct1));
+
+ // Basic operation.
+ is >> h4;
+ VERIFY( h4 == 205199 );
+ VERIFY( is.good() );
+
+ is.clear();
+ is >> f1;
+ VERIFY( f1 == 23445.25 );
+ VERIFY( is.good() );
+
+ is.clear();
+ is >> h3;
+ VERIFY( h3 == 1024365 );
+ VERIFY( is.good() );
+
+ is.clear();
+ is >> h2;
+ VERIFY( h2 == 0 );
+ VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
+ VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
+
+ // Stress tests for explicit errors in grouping corner cases. The
+ // validity of these tests and results have been hammered out in
+ // private email between bkoz and ncm between Jan 25 and Jan 27, 2000.
+ // Thanks nate -- benjamin
+ const std::string s2(",111 4,,4 0.25,345 5..25 156,, 1,000000 1000000 1234,567");
+ h3 = h4 = h2 = 0;
+ f1 = 0.0;
+ const char c_control = '?';
+ char c = c_control;
+ is.clear();
+ is.str(s2);
+
+ is >> h4;
+ VERIFY( h4 == 0 );
+ VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
+ is.clear();
+ is >> c;
+ VERIFY( c == ',' );
+ VERIFY( is.good() );
+
+ is.ignore(3);
+ is >> f1;
+ VERIFY( f1 == 0.0 );
+ VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
+ is.clear();
+ is >> c;
+ VERIFY( c == ',' );
+ is >> c;
+ VERIFY( c == '4' );
+ VERIFY( is.good() );
+
+ is >> f1;
+ VERIFY( f1 == 0.25 );
+ VERIFY( is.good() );
+ is >> c;
+ VERIFY( c == ',' );
+ is >> h2;
+ VERIFY( h2 == 345 );
+ VERIFY( is.good() );
+ f1 = 0.0;
+ h2 = 0;
+
+ is >> f1;
+ VERIFY( f1 == 5.0 );
+ VERIFY( is.good() );
+ is >> f1;
+ VERIFY( f1 == .25 );
+ VERIFY( is.good() );
+
+ is >> h3;
+ VERIFY( h3 == 0 );
+ VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
+ is.clear();
+ is >> c;
+ VERIFY( c == ',' ); // second one
+ VERIFY( is.good() );
+
+ is >> h2;
+ VERIFY( h2 == 0 );
+ VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
+ is.clear();
+
+ is >> h2;
+ VERIFY( h2 == 1000000 );
+ VERIFY( is.good() );
+ h2 = 0;
+
+ is >> h2;
+ VERIFY( h2 == 0 );
+ VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
+ VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
+ is.clear();
+
+#ifdef DEBUG_ASSERT
+ assert(test);
+#endif
+}
+
+int main()
+{
+ test07();
+ return 0;
+}
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+namespace std {
+ class test_numpunct2 : public numpunct<char>
+ {
+ protected:
+ string
+ do_grouping() const
+ { return string("\002\003"); }
+ };
+} // namespace std
+
+void test08()
+{
+ // manufactured locale, grouping is turned on
+ bool test = true;
+ unsigned int h4 = 0, h3 = 0, h2 = 0;
+ float f1 = 0.0;
+ const std::string s1("1,22 205,19 22,123,22");
+ const std::string s2("1,220 2050,19 202,123,22");
+
+ std::istringstream is(s1);
+ is.imbue(std::locale(std::locale(), new std::test_numpunct2));
+
+ // Basic operation.
+ is >> h4;
+ VERIFY( h4 == 122 );
+ VERIFY( is.good() );
+
+ is.clear();
+ is >> h3;
+ VERIFY( h3 == 20519 );
+ VERIFY( is.good() );
+
+ is.clear();
+ is >> h2;
+ VERIFY( h2 == 2212322 );
+ VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
+
+
+#ifdef DEBUG_ASSERT
+ assert(test);
+#endif
+}
+
+int main()
+{
+ test08();
+ return 0;
+}
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+bool test09()
+{
+ bool test = true;
+
+ std::string st("2.456e3-+0.567e-2");
+ std::stringbuf sb(st);
+ std::istream is(&sb);
+ double f1 = 0, f2 = 0;
+ char c;
+ (is>>std::ws) >> f1;
+ (is>>std::ws) >> c;
+ (is>>std::ws) >> f2;
+ test = f1 == 2456;
+ VERIFY( f2 == 0.00567 );
+ VERIFY( c == '-' );
+#ifdef DEBUG_ASSERT
+ assert(test);
+#endif
+
+ return test;
+}
+
+int main()
+{
+ test09();
+ return 0;
+}
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+bool test10() {
+ std::string str_01("0 00 000 +0 +0 -0");
+ std::stringbuf isbuf_01(str_01);
+ std::istream is_01(&isbuf_01);
+
+ bool test = true;
+
+ int n = 365;
+ is_01 >> n;
+ VERIFY( n == 0 );
+ n = 364;
+ is_01 >> n;
+ VERIFY( n == 0 );
+ n = 363;
+ is_01 >> n;
+ VERIFY( n == 0 );
+ n = 362;
+ is_01 >> n;
+ VERIFY( n == 0 );
+ n = 361;
+ is_01 >> n;
+ VERIFY( n == 0 );
+ n = 360;
+ is_01 >> n;
+ VERIFY( n == 0 );
+ VERIFY( is_01.rdstate() == std::ios_base::eofbit );
+
+ std::string str_02("0x32 0X33 033 33");
+ std::stringbuf isbuf_02(str_02);
+ std::istream is_02(&isbuf_02);
+ is_02.unsetf(std::ios_base::basefield);
+ is_02 >> n;
+ VERIFY( n == 50 );
+ is_02 >> n;
+ VERIFY( n == 51 );
+ is_02 >> n;
+ VERIFY( n == 27 );
+ is_02 >> n;
+ VERIFY( n == 33 );
+ VERIFY( is_02.rdstate() == std::ios_base::eofbit );
+
+ std::stringbuf isbuf_03(str_02);
+ std::istream is_03(&isbuf_03);
+ char c;
+ int m;
+
+ is_03 >> std::dec >> n >> c >> m;
+ VERIFY( n == 0 );
+ VERIFY( c == 'x' );
+ VERIFY( m == 32 );
+
+ is_03 >> std::oct >> m >> c >> n;
+ VERIFY( m == 0 );
+ VERIFY( c == 'X' );
+ VERIFY( n == 27 );
+
+ is_03 >> std::dec >> m >> n;
+ VERIFY( m == 33 );
+ VERIFY( n == 33 );
+ VERIFY( is_03.rdstate() == std::ios_base::eofbit );
+
+ std::string str_04("3. 4.5E+2a5E-3 .6E1");
+ std::stringbuf isbuf_04(str_04);
+ std::istream is_04(&isbuf_04);
+
+ double f;
+ is_04 >> f;
+ VERIFY( f == 3.0 );
+ is_04 >> f;
+ VERIFY( f == 450.0 );
+ is_04.ignore();
+ is_04 >> f;
+ VERIFY( f == 0.005 );
+ is_04 >> f;
+ VERIFY( f == 6 );
+ VERIFY( is_03.rdstate() == std::ios_base::eofbit );
+
+ std::string str_05("0E20 5Ea E16");
+ std::stringbuf isbuf_05(str_05);
+ std::istream is_05(&isbuf_05);
+
+ is_05 >> f;
+ VERIFY( f == 0 );
+ is_05 >> f;
+ VERIFY( f == 0 );
+ VERIFY( is_05.rdstate() == std::ios_base::failbit );
+ is_05.clear();
+ is_05 >> c;
+ VERIFY( c == 'a' );
+ is_05 >> f;
+ VERIFY( f == 0 );
+ VERIFY( is_05.rdstate() == std::ios_base::failbit );
+ is_05.clear();
+ is_05.ignore();
+ is_05 >> n;
+ VERIFY( n == 16 );
+
+#ifdef DEBUG_ASSERT
+ assert(test);
+#endif
+
+ return test;
+}
+
+int main()
+{
+ test10();
+ return 0;
+}
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+// In the presence of no fmtflags, the input operator should behave
+// like strtol(x, y, 0)
+// libstdc++/90
+bool test11()
+{
+ bool test = true;
+ const char* cstrlit = "0x2a";
+
+ // sanity check via 'C' library call
+ char* err;
+ long l = std::strtol(cstrlit, &err, 0);
+
+ std::istringstream iss(cstrlit);
+ iss.setf(std::ios::fmtflags(0), std::ios::basefield);
+ int i;
+ iss >> i;
+
+ VERIFY (!iss.fail());
+ VERIFY (l == i);
+
+ return test;
+}
+
+int main()
+{
+ test11();
+ return 0;
+}
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+// XXX This test fails on sparc-solaris2 because of a bug in libc
+// XXX sscanf for very long input. See:
+// XXX http://gcc.gnu.org/ml/gcc/2002-12/msg01422.html
+// { dg-do run { xfail sparc*-*-solaris2* } }
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+// libstdc++/3720
+// excess input should not cause a core dump
+template<typename T>
+bool test12_aux(bool integer_type)
+{
+ bool test = true;
+
+ int digits_overflow;
+ if (integer_type)
+ // This many digits will overflow integer types in base 10.
+ digits_overflow = std::numeric_limits<T>::digits10 + 2;
+ else
+ // This might do it, unsure.
+ digits_overflow = std::numeric_limits<T>::max_exponent10 + 1;
+
+ std::string st;
+ std::string part = "1234567890123456789012345678901234567890";
+ for (int i = 0; i < digits_overflow / part.size() + 1; ++i)
+ st += part;
+ std::stringbuf sb(st);
+ std::istream is(&sb);
+ T t;
+ is >> t;
+ VERIFY(is.fail());
+ return test;
+}
+
+bool test12()
+{
+ bool test = true;
+ VERIFY(test12_aux<short>(true));
+ VERIFY(test12_aux<int>(true));
+ VERIFY(test12_aux<long>(true));
+ VERIFY(test12_aux<float>(false));
+ VERIFY(test12_aux<double>(false));
+ VERIFY(test12_aux<long double>(false));
+ return test;
+}
+
+int main()
+{
+ test12();
+ return 0;
+}
--- /dev/null
+// 1999-04-12 bkoz
+
+// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 27.6.1.2.2 arithmetic extractors
+
+#include <cstdio> // for printf
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+std::string str_01;
+std::string str_02("true false 0 1 110001");
+std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
+std::string str_04("0123");
+
+std::stringbuf isbuf_01(std::ios_base::in);
+std::stringbuf isbuf_02(str_02, std::ios_base::in);
+std::stringbuf isbuf_03(str_03, std::ios_base::in);
+std::stringbuf isbuf_04(str_04, std::ios_base::in);
+
+std::istream is_01(NULL);
+std::istream is_02(&isbuf_02);
+std::istream is_03(&isbuf_03);
+std::istream is_04(&isbuf_04);
+std::stringstream ss_01(str_01);
+
+// libstdc++/3720 part two
+void test13()
+{
+ using namespace std;
+ bool test = true;
+ const char* l1 = "12345678901234567890123456789012345678901234567890123456";
+ const char* l2 = "1.2345678901234567890123456789012345678901234567890123456"
+ " "
+ "1246.9";
+
+ // 1
+ // used to core.
+ double d;
+ istringstream iss1(l2);
+ iss1 >> d;
+ iss1 >> d;
+ VERIFY (d > 1246 && d < 1247);
+
+ // 2
+ // quick test for failbit on maximum length extraction.
+ int i;
+ int max_digits = numeric_limits<int>::digits10 + 1;
+ string digits;
+ for (int j = 0; j < max_digits; ++j)
+ digits += '1';
+ istringstream iss2(digits);
+ iss2 >> i;
+ VERIFY( !iss2.fail() );
+
+ digits += '1';
+ i = 0;
+ iss2.str(digits);
+ iss2.clear();
+ iss2 >> i;
+ VERIFY( i == 0 );
+ VERIFY( iss2.fail() );
+}
+
+int main()
+{
+ test13();
+ return 0;
+}
projects / thirdparty / gcc.git / commitdiff
