2004-10-20 Roland McGrath <roland@redhat.com>

	* sysdeps/gnu/errlist-compat.awk: Don't bail if Versions gives a count
	higher than ERR_MAX reports.  Instead, emit a #define ERR_MAX.
	* sysdeps/gnu/Makefile ($(objpfx)errlist-compat.h): New target.
	(generated): Add errlist-compat.h.
	* sysdeps/gnu/errlist.awk: Make output #include <errlist-compat.h> to
	define ERR_MAX and use that for table size.

3 files changed, 25 insertions, 6 deletions

diff --git a/sysdeps/gnu/Makefile b/sysdeps/gnu/Makefile
index dee0c67bcf..0fc33213ae 100644
--- a/sysdeps/gnu/Makefile
+++ b/sysdeps/gnu/Makefile
@@ -49,10 +49,14 @@ endif
 # Make it unwritable so noone will edit it by mistake.
 	-chmod a-w $@T
 	mv -f $@T $@
-generated += errlist-compat.c
+$(objpfx)errlist-compat.h: $(objpfx)errlist-compat.c
+	sed -n '1p;/ERR_MAX/p' $< > $@T
+	-chmod a-w $@T
+	mv -f $@T $@
+generated += errlist-compat.c errlist-compat.h
 
 # This will force the generation above to happy if need be.
-$(foreach o,.d $(object-suffixes),$(objpfx)errlist$o):$(objpfx)errlist-compat.c
+$(foreach o,.d $(object-suffixes),$(objpfx)errlist$o):$(objpfx)errlist-compat.h
 endif
 
 ifeq ($(subdir),login)
diff --git a/sysdeps/gnu/errlist-compat.awk b/sysdeps/gnu/errlist-compat.awk
index b243a96bc4..db827f3f70 100644
--- 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, 2004 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
@@ -59,7 +59,7 @@ END {
 
   count = maxerr + 1;
 
-  if (highest != count) {
+  if (highest < count) {
     printf "*** errlist.c count %d vs Versions sys_errlist@%s count %d\n", \
       count, highest_version, highest > "/dev/stderr";
     exit 1;
@@ -79,6 +79,12 @@ END {
   print "/* This file was generated by errlist-compat.awk; DO NOT EDIT!  */\n";
   print "#include <shlib-compat.h>\n";
 
+  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;
+  }
+
   for (old in compat) {
     new = compat[old];
     n = vcount[old];
diff --git a/sysdeps/gnu/errlist.awk b/sysdeps/gnu/errlist.awk
index 952cb8073c..3f074ed482 100644
--- a/sysdeps/gnu/errlist.awk
+++ b/sysdeps/gnu/errlist.awk
@@ -1,4 +1,4 @@
-# Copyright (C) 1991-1999, 2002 Free Software Foundation, Inc.
+# Copyright (C) 1991-1999,2002,2004 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
@@ -47,7 +47,16 @@ BEGIN {
     print "#endif";
     print "";
 
-    print "const char *const _sys_errlist_internal[] =";
+    print "#if !defined EMIT_ERR_MAX && !defined ERRLIST_NO_COMPAT";
+    print "# include <errlist-compat.h>";
+    print "#endif";
+    print "#ifdef ERR_MAX";
+    print "# define ERRLIST_SIZE ERR_MAX + 1";
+    print "#else"
+    print "# define ERRLIST_SIZE";
+    print "#endif";
+
+    print "const char *const _sys_errlist_internal[ERRLIST_SIZE] =";
     print "  {";
     print "    [0] = N_(\"Success\"),"
   }