re PR c/10178 (ICE in tree_low_cst)

	PR 10178
	* langhooks.h (struct lang_hooks): Add no_body_blocks bool.
	* langhooks-def.h (LANG_HOOKS_NO_BODY_BLOCKS): New; default false.
	* c-lang.c, objc/objc-lang.c: Override LANG_HOOKS_NO_BODY_BLOCKS
	to true.
	* stmt.c (is_body_block): If lang_hooks.no_body_blocks, always
	return 0.

From-SVN: r68483

1 files changed, 3 insertions, 0 deletions

diff --git a/gcc/stmt.c b/gcc/stmt.c
index b8e1014..426ded3 100644
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -3511,6 +3511,9 @@ int
 is_body_block (stmt)
      tree stmt;
 {
+  if (lang_hooks.no_body_blocks)
+    return 0;
+
   if (TREE_CODE (stmt) == BLOCK)
     {
       tree parent = BLOCK_SUPERCONTEXT (stmt);