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| author | Richard Biener <rguenther@suse.de> | 2020-10-26 10:10:46 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2020-12-01 11:38:12 +0100 |
| commit | 46384dc73076d945c9222b3f0850a9aa3e694eda (patch) | |
| tree | 30bcf8812421f78782a9c28d3cecc41ddfccf11c /gcc | |
| parent | 1631094a3eb4d1b1eb8b04db6f3b9ba6a5b645eb (diff) | |
| download | gcc-46384dc73076d945c9222b3f0850a9aa3e694eda.zip gcc-46384dc73076d945c9222b3f0850a9aa3e694eda.tar.gz gcc-46384dc73076d945c9222b3f0850a9aa3e694eda.tar.bz2 | |
middle-end/97554 - avoid overflow in alloc size compute
This avoids overflow in the allocation size computations in
sbitmap_vector_alloc when the result exceeds 2GB.
2020-10-26 Richard Biener <rguenther@suse.de>
PR middle-end/97554
* sbitmap.c (sbitmap_vector_alloc): Use size_t for byte
quantities to avoid overflow.
(cherry picked from commit 50f9e1f4d458e36d306b2449c689e45492847f68)
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/sbitmap.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/sbitmap.c b/gcc/sbitmap.c index 967868a..6dacdd0 100644 --- a/gcc/sbitmap.c +++ b/gcc/sbitmap.c @@ -139,7 +139,8 @@ sbitmap_realloc (sbitmap src, unsigned int n_elms) sbitmap * sbitmap_vector_alloc (unsigned int n_vecs, unsigned int n_elms) { - unsigned int i, bytes, offset, elm_bytes, size, amt, vector_bytes; + unsigned int i, size; + size_t amt, bytes, vector_bytes, elm_bytes, offset; sbitmap *bitmap_vector; size = SBITMAP_SET_SIZE (n_elms); |