acinclude.m4 ([GLIBCXX_ENABLE_C99]): Avoid -Wwrite-strings warning.

2014-05-08  Paolo Carlini  <paolo.carlini@oracle.com>

	* acinclude.m4 ([GLIBCXX_ENABLE_C99]): Avoid -Wwrite-strings warning.
	* configure: Regenerate.

From-SVN: r210206

libstdc++-v3/ChangeLog

+2014-05-08  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* acinclude.m4 ([GLIBCXX_ENABLE_C99]): Avoid -Wwrite-strings warning.
+	* configure: Regenerate.
+
 2014-05-07  Jonathan Wakely  <jwakely@redhat.com>
 
 	PR libstdc++/61023

libstdc++-v3/acinclude.m4

@@ -1052,8 +1052,8 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
 	vscanf("%i", args);
 	vsnprintf(fmt, 0, "%i", args);
 	vsscanf(fmt, "%i", args);
-      }],
-     [snprintf("12", 0, "%i");],
+	snprintf(fmt, 0, "%i");
+      }], [],
      [glibcxx_cv_c99_stdio=yes], [glibcxx_cv_c99_stdio=no])
   ])
   AC_MSG_RESULT($glibcxx_cv_c99_stdio)

libstdc++-v3/configure

@@ -16900,11 +16900,12 @@ else
 	vscanf("%i", args);
 	vsnprintf(fmt, 0, "%i", args);
 	vsscanf(fmt, "%i", args);
+	snprintf(fmt, 0, "%i");
       }
 int
 main ()
 {
-snprintf("12", 0, "%i");
+
   ;
   return 0;
 }
@@ -16930,11 +16931,12 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 	vscanf("%i", args);
 	vsnprintf(fmt, 0, "%i", args);
 	vsscanf(fmt, "%i", args);
+	snprintf(fmt, 0, "%i");
       }
 int
 main ()
 {
-snprintf("12", 0, "%i");
+
   ;
   return 0;
 }