c-format.c (check_format_info_main): Use strncmp rather than a magic prefix to…

c-format.c (check_format_info_main): Use strncmp rather than a magic prefix to handle multichar length specs.

gcc
	* c-format.c (check_format_info_main): Use strncmp rather than a magic prefix
	to handle multichar length specs.
	* config/i386/msformat-c.c (format_length_info ms_printf_length_specs):
	Don't prefix "I64" and "I32" with '\0'.


testsuite
	* gcc.dg/format/ms-warnI64-1.c: New file.

From-SVN: r134623

gcc/ChangeLog

+2008-04-24  Danny Smith  <dannysmith@users.net>
+
+	* c-format.c (check_format_info_main): Use strncmp rather than a magic prefix
+	to handle multichar length specs.
+	* config/i386/msformat-c.c (format_length_info ms_printf_length_specs):
+	Don't prefix "I64" and "I32" with '\0'.
+
 2008-04-24  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/36015

gcc/c-format.c

@@ -1779,26 +1779,12 @@ check_format_info_main (format_check_results *res,
       length_chars_std = STD_C89;
       if (fli)
 	{
-	  while (fli->name != 0 && fli->name[0] != *format_chars)
-	    {
-	      if (fli->name[0] == '\0')
-		{
-		  int si  = strlen (fli->name + 1) + 1;
-		  int i = 1;
-		  while (fli->name[i] != 0 && fli->name[i] == format_chars [i - 1])
-		    ++i;
-		 if (si == i)
-		   {
-		     if (si > 2)
-		       format_chars += si - 2;
-		     break;
-		   }
-	       }
+	  while (fli->name != 0 
+ 		 && strncmp (fli->name, format_chars, strlen (fli->name)))
 	      fli++;
-	    }
 	  if (fli->name != 0)
 	    {
-	      format_chars++;
+ 	      format_chars += strlen (fli->name);
 	      if (fli->double_name != 0 && fli->name[0] == *format_chars)
 		{
 		  format_chars++;

gcc/config/i386/msformat-c.c

@@ -38,8 +38,8 @@ static const format_length_info ms_printf_length_specs[] =
 {
   { "h", FMT_LEN_h, STD_C89, NULL, 0, 0 },
   { "l", FMT_LEN_l, STD_C89, NULL, 0, 0 },
-  { "\0I32", FMT_LEN_l, STD_EXT, NULL, 0, 0 },
-  { "\0I64", FMT_LEN_ll, STD_EXT, NULL, 0, 0 },
+  { "I32", FMT_LEN_l, STD_EXT, NULL, 0, 0 },
+  { "I64", FMT_LEN_ll, STD_EXT, NULL, 0, 0 },
   { "I", FMT_LEN_L, STD_EXT, NULL, 0, 0 },
   { NULL, 0, 0, NULL, 0, 0 }
 };

gcc/testsuite/ChangeLog

+2008-04-24  Danny Smith  <dannysmith@users.net>
+
+	* gcc.dg/format/ms-warnI64-1.c: New file.
+
 2008-04-24  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/36015

gcc/testsuite/gcc.dg/format/ms-warnI64-1.c

+/* Test for printf formats. Test for ISO C warnings with MS "I64"
+   extension.*/
+
+/* { dg-do compile { target { *-*-mingw* } } } */
+/* { dg-options "-std=iso9899:1990 -pedantic -Wformat -Wno-long-long" } */
+
+#define USE_SYSTEM_FORMATS
+#include "format.h"
+
+void
+foo (long long ll, unsigned long long ull, long long *lln,
+     long long *llp, unsigned long long *ullp)
+{
+  printf ("%I64d", ll); /* { dg-warning "'I64' ms_printf length modifier" "printf %I64d" } */
+  printf ("%I64i", ll); /* { dg-warning "'I64' ms_printf length modifier" "printf %I64i" } */
+  printf ("%I64o", ull); /* { dg-warning "'I64' ms_printf length modifier" "printf %I64o" } */
+  printf ("%I64u", ull); /* { dg-warning "'I64' ms_printf length modifier" "printf %I64u" } */
+  printf ("%I64x", ull); /* { dg-warning "'I64' ms_printf length modifier" "printf %I64x" } */
+  printf ("%I64X", ull); /* { dg-warning "'I64' ms_printf length modifier" "printf %I64X" } */
+  printf ("%I64n", lln); /* { dg-warning "'I64' ms_printf length modifier" "printf %I64n" } */
+  scanf ("%I64d", llp); /* { dg-warning "'I64' ms_scanf length modifier" "scanf %I64d" } */
+  scanf ("%I64i", llp); /* { dg-warning "'I64' ms_scanf length modifier" "scanf %I64i" } */
+  scanf ("%I64o", ullp); /* { dg-warning "'I64' ms_scanf length modifier" "scanf %I64o" } */
+  scanf ("%I64u", ullp); /* { dg-warning "'I64' ms_scanf length modifier" "scanf %I64u" } */
+  scanf ("%I64x", ullp); /* { dg-warning "'I64' ms_scanf length modifier" "scanf %I64x" } */
+  scanf ("%I64X", ullp); /* { dg-warning "'I64' ms_scanf length modifier"  "scanf %I64X" } */
+  scanf ("%I64n", llp); /* { dg-warning "'I64' ms_scanf length modifier" "scanf %I64n" } */
+}