Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / sysdeps / gnu / errlist-compat.awk

diff --git a/sysdeps/gnu/errlist-compat.awk b/sysdeps/gnu/errlist-compat.awk
index 88b4d4f126e3a422409135744c0fa5cf12e5fb34..7e2c33e89bd401ecacfb4de56a6363b18ca9da14 100644 (file)
--- a/sysdeps/gnu/errlist-compat.awk
+++ b/sysdeps/gnu/errlist-compat.awk
@@ -1,5 +1,5 @@
 # awk script to generate errlist-compat.c
-# Copyright (C) 2002 Free Software Foundation, Inc.
+# Copyright (C) 2002-2017 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -13,9 +13,8 @@
 # Lesser General Public License for more details.
 
 # You should have received a copy of the GNU Lesser General Public
-# License along with the GNU C Library; if not, write to the Free
-# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307 USA.
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
 
 #
 # This script takes the Versions file as input and looks for #errlist-compat
@@ -29,62 +28,84 @@
 # necessary compatibility symbols for older, smaller versions of sys_errlist.
 #
 
-BEGIN { highest = 0 }
-
 # These two rules catch the Versions file contents.
 NF == 2 && $2 == "{" { last_version = $1; next }
 $1 == "#errlist-compat" {
-  n = $2 + 0;
-  if (n < 100) {
+  # Don't process any further Versions files
+  ARGC = ARGIND + 1;
+  cnt = $2 + 0;
+  if (cnt < 80) {
     print "*** this line seems bogus:", $0 > "/dev/stderr";
     exit 1;
   }
-  version[n] = last_version;
-  if (n > highest)
-    highest = n;
+  version[pos + 0] = cnt SUBSEP last_version;
+  pos++;
+  if (cnt < highest) {
+    printf "*** %s #errlist-compat counts are not sorted\n", ARGV[ARGIND];
+    exit 1;
+  }
+  if (cnt > highest)
+    highest = cnt;
+  highest_version = last_version;
   next;
 }
 
 END {
+  if (! highest_version) {
+    print "/* No sys_errlist/sys_nerr symbols defined on this platform.  */";
+    exit 0;
+  }
+
   count = maxerr + 1;
 
-  if (highest != count) {
+  if (highest < count) {
     printf "*** errlist.c count %d vs Versions sys_errlist@%s count %d\n", \
-      count, version[highest], highest > "/dev/stderr";
+      count, highest_version, highest > "/dev/stderr";
     exit 1;
   }
 
   lastv = "";
-  for (n = 0; n <= count; ++n)
-    if (n in version) {
-      v = version[n];
-      gsub(/[^A-Z0-9_]/, "_", v);
-      if (lastv != "")
-       compat[lastv] = v;
-      lastv = v;
-      vcount[v] = n;
-    }
+  for (n = 0; n < pos; ++n) {
+    split(version[n], t, SUBSEP)
+    v = t[2];
+    gsub(/[^A-Z0-9_]/, "_", v);
+    if (lastv != "")
+      compat[lastv] = v;
+    lastv = v;
+    vcount[v] = t[1];
+  }
 
   print "/* This file was generated by errlist-compat.awk; DO NOT EDIT!  */\n";
   print "#include <shlib-compat.h>\n";
 
-  for (old in compat) {
+  if (highest > count) {
+    printf "*** errlist.c count %d inflated to %s count %d (old errno.h?)\n", \
+      count, highest_version, highest > "/dev/stderr";
+    printf "#define ERR_MAX %d\n\n", highest - 1;
+  }
+
+  # same regardless of awk's ordering of the associative array.
+  num_compat_elems = asorti(compat, compat_indices)
+  for (i = 1; i <= num_compat_elems; i++) {
+    old = compat_indices[i]
     new = compat[old];
     n = vcount[old];
     printf "#if SHLIB_COMPAT (libc, %s, %s)\n", old, new;
     printf "# include <bits/wordsize.h>\n";
-    printf "extern const char *const __sys_errlist_%s[];\n", old;
+    printf "extern const char *const __sys_errlist_%s[NERR];\n", old;
     printf "const int __sys_nerr_%s = %d;\n", old, n;
-    printf "strong_alias (_sys_errlist_internal, __sys_errlist_%s)\n", old;
-    printf "declare_symbol (__sys_errlist_%s, object, __WORDSIZE/8*%d)\n", \
-      old, n;
+    printf "declare_symbol_alias (__sys_errlist_%s, _sys_errlist_internal,", \
+      old;
+    printf " object, __WORDSIZE/8*%d)\n", n;
     printf "compat_symbol (libc, __sys_errlist_%s, sys_errlist, %s);\n", \
       old, old;
     printf "compat_symbol (libc, __sys_nerr_%s, sys_nerr, %s);\n", old, old;
 
-    printf "extern const char *const ___sys_errlist_%s[];\n", old;
+    printf "extern const char *const ___sys_errlist_%s[NERR];\n", old;
     printf "extern const int __sys_nerr_%s;\n", old;
-    printf "strong_alias (__sys_errlist_%s, ___sys_errlist_%s)\n", old, old;
+    printf "declare_symbol_alias (___sys_errlist_%s, _sys_errlist_internal,", \
+      old;
+    printf " object, __WORDSIZE/8*%d)\n", n;
     printf "strong_alias (__sys_nerr_%s, ___sys_nerr_%s)\n", old, old;
     printf "compat_symbol (libc, ___sys_errlist_%s, _sys_errlist, %s);\n", \
       old, old;
@@ -93,13 +114,20 @@ END {
   }
 
   printf "\
-extern const char *const __sys_errlist_internal[];\n\
+extern const char *const __sys_errlist_internal[NERR];\n\
 extern const int __sys_nerr_internal;\n\
 strong_alias (_sys_errlist_internal, __sys_errlist_internal)\n\
 strong_alias (_sys_nerr_internal, __sys_nerr_internal)\n\
+extern const char *const sys_errlist[NERR];\n\
 versioned_symbol (libc, _sys_errlist_internal, sys_errlist, %s);\n\
 versioned_symbol (libc, __sys_errlist_internal, _sys_errlist, %s);\n\
 versioned_symbol (libc, _sys_nerr_internal, sys_nerr, %s);\n\
 versioned_symbol (libc, __sys_nerr_internal, _sys_nerr, %s);\n", \
     lastv, lastv, lastv, lastv;
+
+  print "\n\
+link_warning (sys_errlist, \"\
+`sys_errlist' is deprecated; use `strerror' or `strerror_r' instead\")\n\
+link_warning (sys_nerr, \"\
+`sys_nerr' is deprecated; use `strerror' or `strerror_r' instead\")";
 }