X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=include%2Furcu%2Fcompiler.h;h=157346763078a3ec1d73b7c65618ed1bd98b325f;hb=2875743718fb23293190b5edd0f2b530977270b1;hp=511dbdf302456d46329bce98e1147b7c34a51543;hpb=6893800a4d1cc14dff0395ddcd660a5138db183d;p=userspace-rcu.git

diff --git a/include/urcu/compiler.h b/include/urcu/compiler.h
index 511dbdf..1573467 100644
--- a/include/urcu/compiler.h
+++ b/include/urcu/compiler.h
@@ -109,22 +109,20 @@
 #define CAA_ARRAY_SIZE(x)	(sizeof(x) / sizeof((x)[0]))
 
 /*
- * Don't allow compiling with buggy compiler.
+ * URCU_GCC_VERSION is used to blacklist specific GCC versions with known
+ * bugs, clang also defines these macros to an equivalent GCC version it
+ * claims to support, so exclude it.
  */
-
-#ifdef __GNUC__
+#if defined(__GNUC__) && !defined(__clang__)
 # define URCU_GCC_VERSION	(__GNUC__ * 10000 \
 				+ __GNUC_MINOR__ * 100 \
 				+ __GNUC_PATCHLEVEL__)
+#endif
 
-/*
- * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854
- */
-# ifdef __ARMEL__
-#  if URCU_GCC_VERSION >= 40800 && URCU_GCC_VERSION <= 40802
-#   error Your gcc version produces clobbered frame accesses
-#  endif
-# endif
+#ifndef __cplusplus
+#define caa_c_transparent_union	__attribute__((__transparent_union__))
+#else
+#define caa_c_transparent_union
 #endif
 
 #endif /* _URCU_COMPILER_H */