Hello,
While working on something else, I noticed that debug_tree (vec), when
vec is a TREE_VEC, was crashing because TREE_NOTHROW was asserting that
its argument is not a TREE_VEC, so print_node would crash.
It turned out that TREE_NOTHROW was accidentally modified by this
change set:
commit 87d8f7b67c6a36c37e48e298f26e693520099b1e
Author: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue Aug 21 10:03:38 2012 +0000
2012-08-21 Richard Guenther <rguent...@suse.de>
cp/
* cp-tree.h (TREE_INDIRECT_USING): Use TREE_LANG_FLAG_0 accessor.
(ATTR_IS_DEPENDENT): Likewise.
(ARGUMENT_PACK_INCOMPLETE_P): Use TREE_ADDRESSABLE instead of
TREE_LANG_FLAG_0 on TREE_VECs.
* tree.h (struct tree_base): Add union to make it possible to
re-use the upper 4 bytes for tree codes that do not need as
many flags as others. Move visited and default_def_flag to
common bits section in exchange for saturating_flag and
unsigned_flag. Add SSA name version and tree vec length
fields here.
(struct tree_vec): Remove length field here.
(struct tree_ssa_name): Remove version field here.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@190558
138bc75d-0d04-0410-961f-82ee72b054a4
Richard Guenther pre-approved the reverting of the TREE_NOTHROW change
line.
Tested on x86_64-unknown-linux-gnu against master and applied to
trunk.
gcc/
* tree.h (TREE_NOTHROW): Use the base.nothrow_flag.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@190595
138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/ChangeLog | 4 ++++
gcc/tree.h | 2 +-
2 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/gcc/tree.h b/gcc/tree.h
index f332fdd..bca0576 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -1305,7 +1305,7 @@ extern void omp_clause_range_check_failed (const_tree,
const char *, int,
throw an exception. In a CALL_EXPR, nonzero means the call cannot
throw. We can't easily check the node type here as the C++
frontend also uses this flag (for AGGR_INIT_EXPR). */
-#define TREE_NOTHROW(NODE) (TREE_NOT_CHECK (NODE, TREE_VEC)->base.nothrow_flag)
+#define TREE_NOTHROW(NODE) ((NODE)->base.nothrow_flag)
/* In a CALL_EXPR, means that it's safe to use the target of the call
expansion as the return slot for a call that returns in memory. */
--
Dodji
