[glib] Fall back for overflow-checked arithmetic with Intel compiler

[Colin Walters <walters src gnome org>]

commit a5f209bc656177a25586c461631fc5ea5459449f
Author: Thiago Macieira <thiago macieira intel com>
Date:   Fri Jul 22 21:18:08 2016 -0700

    Fall back for overflow-checked arithmetic with Intel compiler
    
    The Intel compiler does not have intrinsics like `__builtin_uadd_overflow`.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=769104

 glib/gtypes.h |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/glib/gtypes.h b/glib/gtypes.h
index c20217b..18ac6d1 100644
--- a/glib/gtypes.h
+++ b/glib/gtypes.h
@@ -381,7 +381,8 @@ typedef const gchar *   (*GTranslateFunc)       (const gchar   *str,
 /* Overflow-checked unsigned integer arithmetic
  */
 #ifndef _GLIB_TEST_OVERFLOW_FALLBACK
-#if __GNUC__ >= 5
+/* https://bugzilla.gnome.org/show_bug.cgi?id=769104 */
+#if __GNUC__ >= 5 && !defined(__INTEL_COMPILER)
 #define _GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS
 #elif __has_builtin(__builtin_uadd_overflow)
 #define _GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS