gdb/testsuite/gdb.base/condbreak.exp

   1 # Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 2 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program; if not, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  16
  17 # Please email any bugs, comments, and/or additions to this file to:
  18 # bug-gdb@prep.ai.mit.edu
  19
  20 # This test was written by Rich Title.
  21 # Purpose is to test conditional breakpoints.
  22 # Modeled after "break.exp".
  23
  24 if $tracelevel then {
  25         strace $tracelevel
  26         }
  27
  28 global usestubs
  29
  30 #
  31 # test running programs
  32 #
  33 set prms_id 0
  34 set bug_id 0
  35
  36 set testfile "break"
  37 set srcfile ${testfile}.c
  38 set binfile ${objdir}/${subdir}/${testfile}
  39
  40 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-w}] != "" } {
  41     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  42 }
  43
  44 if [get_compiler_info ${binfile}] {
  45     return -1;
  46 }
  47
  48 gdb_exit
  49 gdb_start
  50 gdb_reinitialize_dir $srcdir/$subdir
  51 gdb_load ${binfile}
  52
  53
  54 if [target_info exists gdb_stub] {
  55     gdb_step_for_stub;
  56 }
  57
  58 #
  59 # test break at function
  60 #
  61 gdb_test "break main" \
  62     "Breakpoint.*at.* file .*$srcfile, line.*" \
  63     "breakpoint function"
  64
  65 #
  66 # test conditional break at function
  67 #
  68 gdb_test "break marker1 if 1==1" \
  69     "Breakpoint.*at.* file .*$srcfile, line.*" \
  70     "break function if condition"
  71
  72 gdb_test "delete 2" \
  73     "" \
  74     "delete break"
  75
  76 #
  77 # test conditional break at line number
  78 #
  79 gdb_test "break 79 if 1==1" \
  80     "Breakpoint.*at.* file .*$srcfile, line 79\\." \
  81     "break line if condition"
  82
  83 gdb_test "delete 3" \
  84     "" \
  85     "delete break"
  86
  87 #
  88 # test conditional break at function
  89 #
  90 gdb_test "break marker1 if (1==1)" \
  91     "Breakpoint.*at.* file .*$srcfile, line.*" \
  92     "break function if (condition)"
  93
  94 #
  95 # test conditional break at line number
  96 #
  97 gdb_test "break 79 if (1==1)" \
  98     "Breakpoint.*at.* file .*$srcfile, line 79\\." \
  99     "break line if (condition)"
 100
 101 gdb_test "break marker2 if (a==43)" \
 102     "Breakpoint.*at.* file .*$srcfile, line.*" \
 103     "break function if (condition)"
 104
 105 #
 106 # check to see what breakpoints are set
 107 #
 108
 109 if {$hp_aCC_compiler} {
 110     set marker1_proto "\\(void\\)"
 111     set marker2_proto "\\(int\\)"
 112 } else {
 113     set marker1_proto ""
 114     set marker2_proto ""
 115 }
 116
 117 set main_line 75
 118 gdb_test "info break" \
 119     "Num Type\[ \]+Disp Enb Address\[ \]+What.*
 120 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$main_line.*
 121 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker1$marker1_proto at .*$srcfile:4\[38\].*
 122 \[\t \]+stop only if 1 == 1.*
 123 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:79.*
 124 \[\t \]+stop only if 1 == 1.*
 125 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker2$marker2_proto at .*$srcfile:4\[49\].*
 126 \[\t \]+stop only if a == 43.*" \
 127     "breakpoint info"
 128
 129
 130 #
 131 # run until the breakpoint at main is hit.
 132 #
 133
 134
 135 rerun_to_main
 136
 137 #
 138 # run until the breakpoint at a line number
 139 #
 140 gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:79.*79\[\t \]+printf.*factorial.*" \
 141                         "run until breakpoint set at a line number"
 142
 143 #
 144 # run until the breakpoint at marker1
 145 #
 146 # If the inferior stops at the first instruction of a source line, GDB
 147 # won't print the actual PC value; the source line is enough to
 148 # exactly specify the PC.  But if the inferior is instead stopped in
 149 # the midst of a source line, GDB will include the PC in the
 150 # breakpoint hit message.  This way, GDB always provides the exact
 151 # stop location, but avoids clutter when possible.
 152 #
 153 # Suppose you have a function written completely on one source line, like:
 154 #    int foo (int x) { return 0; }
 155 # Setting a breakpoint at `foo' actually places the breakpoint after
 156 # foo's prologue.
 157 #
 158 # GCC's STABS writer always emits a line entry attributing the
 159 # prologue instructions to the line containing the function's open
 160 # brace, even if the first user instruction is also on that line.
 161 # This means that, in the case of a one-line function, you will get
 162 # two line entries in the debug info for the same line: one at the
 163 # function's entry point, and another at the first user instruction.
 164 # GDB preserves these duplicated line entries, and prefers the later
 165 # one; thus, when the program stops after the prologue, at the first
 166 # user instruction, GDB's search finds the second line entry, decides
 167 # that the PC is indeed at the beginning of a source line, and doesn't
 168 # print an address in the breakpoint hit message.
 169 #
 170 # GCC's Dwarf2 writer, on the other hand, squeezes out duplicate line
 171 # entries, so GDB considers the source line to begin at the start of
 172 # the function's prologue.  Thus, if the program stops at the
 173 # breakpoint, GDB will decide that the PC is not at the beginning of a
 174 # source line, and will print an address.
 175 #
 176 # I think the Dwarf2 writer's behavior is arguably correct, but not
 177 # helpful.  If the user sets a breakpoint at that source line, they
 178 # want that breakpoint to fall after the prologue.  Identifying the
 179 # prologue's code with the opening brace is nice, but it shouldn't
 180 # take precedence over real code.
 181 #
 182 # Until the Dwarf2 writer gets fixed, I'm going to XFAIL its behavior.
 183 send_gdb "continue\n"
 184 gdb_expect {
 185     -re  "Continuing\\..*Breakpoint \[0-9\]+, marker1 \\(\\) at .*$srcfile:4\[38\].*4\[38\]\[\t \]+.*$gdb_prompt $" {
 186         pass "run until breakpoint at marker1"
 187     }
 188     -re  "Continuing\\..*Breakpoint \[0-9\]+, $hex in marker1 \\(\\) at .*$srcfile:4\[38\].*4\[38\]\[\t \]+.*$gdb_prompt $" {
 189         xfail "run until breakpoint at marker1"
 190     }
 191     -re "$gdb_prompt $" {
 192         fail "run until breakpoint at marker1"
 193     }
 194     timeout {
 195         fail "(timeout) run until breakpoint at marker1"
 196     }
 197 }
 198
 199 #
 200 # run until the breakpoint at marker2
 201 #
 202 setup_xfail hppa2.0w-*-* 11512CLLbs
 203 gdb_test "continue" "Continuing\\..*Breakpoint \[0-9\]+, marker2 \\(a=43\\) at .*$srcfile:4\[49\].*4\[49\]\[\t \]+.*" \
 204                         "run until breakpoint at marker2"
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