re PR middle-end/20109 (printf optimizations and non-ASCII character sets)

	PR middle-end/20109
	PR middle-end/25120
	* builtins.c (init_target_chars): New.
	(expand_builtin_printf, expand_builtin_fprintf,
	expand_builtin_sprintf, fold_builtin_sprintf,
	maybe_emit_sprintf_chk_warning, fold_builtin_sprintf_chk,
	fold_builtin_snprintf_chk, fold_builtin_printf,
	fold_builtin_fprintf): Check for matching format strings using
	the target charset.
	
testsuite:
	* gcc.dg/charset/builtin2.c: New test.

From-SVN: r107652

gcc/ChangeLog

+2005-11-29  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	PR middle-end/20109
+	PR middle-end/25120
+	* builtins.c (init_target_chars): New.
+	(expand_builtin_printf, expand_builtin_fprintf,
+	expand_builtin_sprintf, fold_builtin_sprintf,
+	maybe_emit_sprintf_chk_warning, fold_builtin_sprintf_chk,
+	fold_builtin_snprintf_chk, fold_builtin_printf,
+	fold_builtin_fprintf): Check for matching format strings using
+	the target charset.
+
 2005-11-29  Paul Brook  <paul@codesourcery.com>
 
 	* config.gcc: Do not use fixproto on m68k-elf.

gcc/testsuite/ChangeLog

+2005-11-29  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* gcc.dg/charset/builtin2.c: New test.
+
 2005-11-28  Jakub Jelinek  <jakub@redhat.com>
 
 	* gcc.dg/compat/struct-layout-1_generate.c: Add -w option

gcc/testsuite/gcc.dg/charset/builtin2.c

+/* Ensure that transformations of *printf are performed correctly
+   regardless of -fexec-charset.  See PR 25120.  */
+
+/* { dg-do compile } */
+/* { dg-require-iconv "IBM1047" } */
+/* { dg-options "-O2 -fexec-charset=IBM1047" } */
+/* { dg-final { scan-assembler-not "printf" } } */
+/* { dg-final { scan-assembler-not "fprintf" } } */
+/* { dg-final { scan-assembler-not "sprintf" } } */
+
+#include <stdio.h>
+
+void foo (char *dst, const char *src)
+{
+  printf ("\n");
+  printf ("hello world\n");
+  printf ("%s", "\n");
+  printf ("%s", "hello world\n");
+  printf ("%c", '\n');
+  printf ("%s\n", "hello world");
+  printf ("%s\n", src);
+  
+  fprintf (stdout, "\n");
+  fprintf (stdout, "hello world\n");
+  fprintf (stdout, "%s", "\n");
+  fprintf (stdout, "%s", "hello world\n");
+  fprintf (stdout, "%c", '\n');
+  fprintf (stdout, "%s", src);
+
+  sprintf (dst, "hello world\n");
+  sprintf (dst, "%s", src);
+}