snprintf: port snprintf (NULL, 0, ...) to Solaris 8 and 9

[gnulib.git] / m4 / snprintf.m4

diff --git a/m4/snprintf.m4 b/m4/snprintf.m4
index 522b107..80ac6fd 100644 (file)
--- a/m4/snprintf.m4
+++ b/m4/snprintf.m4
@@ -13,7 +13,12 @@ AC_DEFUN([gl_FUNC_SNPRINTF],
     gl_SNPRINTF_SIZE1
     case "$gl_cv_func_snprintf_size1" in
       *yes)
-        gl_cv_func_snprintf_usable=yes
+        gl_SNPRINTF_RETVAL_C99
+        case "$gl_cv_func_snprintf_retval_c99" in
+          *yes)
+            gl_cv_func_snprintf_usable=yes
+            ;;
+        esac
         ;;
     esac
   fi