diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-01-08 21:35:25 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-01-08 21:35:25 +0000 |
| commit | 454a13077a315a3e394ae4b56875f47ef8b7a305 (patch) | |
| tree | b045b940e8c675ad52a8a9376cfb9fe0fcc7abc0 /gcc/tree-ssa-structalias.c | |
| parent | 0b1c894b43a94f1796bedb679d91fa44a2245294 (diff) | |
| download | gcc-454a13077a315a3e394ae4b56875f47ef8b7a305.tar.gz | |
2008-01-08 Richard Guenther <rguenther@suse.de>
PR middle-end/31863
* tree-ssa-structalias.c (push_fields_onto_fieldstack): Bail
out early if the result will be unused.
* g++.dg/torture/pr31863.C: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@131405 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-structalias.c')
| -rw-r--r-- | gcc/tree-ssa-structalias.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c index 5e197c47fee..70a9d3212c6 100644 --- a/gcc/tree-ssa-structalias.c +++ b/gcc/tree-ssa-structalias.c @@ -4062,7 +4062,13 @@ push_fields_onto_fieldstack (tree type, VEC(fieldoff_s,heap) **fieldstack, { tree field; int count = 0; - int first_element = VEC_length (fieldoff_s, *fieldstack); + unsigned int first_element = VEC_length (fieldoff_s, *fieldstack); + + /* If the vector of fields is growing too big, bail out early. + Callers check for VEC_length <= MAX_FIELDS_FOR_FIELD_SENSITIVE, make + sure this fails. */ + if (first_element > MAX_FIELDS_FOR_FIELD_SENSITIVE) + return 0; if (TREE_CODE (type) == COMPLEX_TYPE) { |