[glib/clang-cl-improvements: 32/33] gmacros.h: Use _Static_assert for clang

[Chun-wei Fan <fanchunwei src gnome org>]

commit 7b76995298fb2ce2f751d630bb5c23a56a018725
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Sat Mar 20 10:38:08 2021 +0800

    gmacros.h: Use _Static_assert for clang
    
    It appears that CLang supports _Static_assert() even when not in C11
    mode, since at least CLang 3.1, so let's just use that for CLang builds.
    
    Fixes issue #2338.

 glib/gmacros.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/glib/gmacros.h b/glib/gmacros.h
index 2ece48ba0..666db5790 100644
--- a/glib/gmacros.h
+++ b/glib/gmacros.h
@@ -754,7 +754,7 @@
 #ifndef __GI_SCANNER__ /* The static assert macro really confuses the introspection parser */
 #define G_PASTE_ARGS(identifier1,identifier2) identifier1 ## identifier2
 #define G_PASTE(identifier1,identifier2)      G_PASTE_ARGS (identifier1, identifier2)
-#if !defined(__cplusplus) && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+#if !defined(__cplusplus) && defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L || defined(__clang__))
 #define G_STATIC_ASSERT(expr) _Static_assert (expr, "Expression evaluates to false")
 #elif (defined(__cplusplus) && __cplusplus >= 201103L) || \
       (defined(__cplusplus) && defined (_MSC_VER) && (_MSC_VER >= 1600)) || \