2008-09-18 Martin Jambor <mjambor@suse.cz>

[pf3gnuchains/gcc-fork.git] / gcc / system.h

diff --git a/gcc/system.h b/gcc/system.h
index be70b02..80bfe61 100644 (file)
--- a/gcc/system.h
+++ b/gcc/system.h
@@ -786,8 +786,9 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
    change after the fact).  Beyond these uses, most other cases of
    using this macro should be viewed with extreme caution.  */
 
-#if defined(__GNUC__) && GCC_VERSION != 4000
-/* GCC 4.0.x has a bug where it may ICE on this expression.  */
+#if defined(__GNUC__) && GCC_VERSION > 4000
+/* GCC 4.0.x has a bug where it may ICE on this expression,
+   so does GCC 3.4.x (PR17436).  */
 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
 #else
 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
@@ -796,6 +797,7 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
 #define CONST_CAST_TREE(X) CONST_CAST(union tree_node *, (X))
 #define CONST_CAST_RTX(X) CONST_CAST(struct rtx_def *, (X))
 #define CONST_CAST_BB(X) CONST_CAST(struct basic_block_def *, (X))
+#define CONST_CAST_GIMPLE(X) CONST_CAST(union gimple_statement_d *, (X))
 
 /* Activate certain diagnostics as warnings (not errors via the
    -Werror flag).  */