compiler: use __GNUC__ instead of the undefined __GNUC_MAJOR__

[urcu.git] / urcu / compiler.h

diff --git a/urcu/compiler.h b/urcu/compiler.h
index 19534f08522ac3cc28a3557d93f7a16baab6e56e..2e0237e15194d01953fa8d5792c9194acb270a08 100644 (file)
--- a/urcu/compiler.h
+++ b/urcu/compiler.h
@@ -97,8 +97,8 @@
                (unsigned long) (v))
 
 #if defined (__GNUC__) \
-       && ((__GNUC_MAJOR__ == 4) && (__GNUC_MINOR__ >= 5)      \
-               || __GNUC_MAJOR__ >= 5)
+       && ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)    \
+               || __GNUC__ >= 5)
 #define CDS_DEPRECATED(msg)    \
        __attribute__((deprecated(msg)))
 #else
@@ -108,4 +108,23 @@
 
 #define CAA_ARRAY_SIZE(x)      (sizeof(x) / sizeof((x)[0]))
 
+/*
+ * Don't allow compiling with buggy compiler.
+ */
+
+#ifdef __GNUC__
+# define URCU_GCC_VERSION      (__GNUC__ * 10000 \
+                               + __GNUC_MINOR__ * 100 \
+                               + __GNUC_PATCHLEVEL__)
+
+/*
+ * 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
+#endif
+
 #endif /* _URCU_COMPILER_H */