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| author | Richard Biener <rguenther@suse.de> | 2017-12-08 14:45:30 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-12-08 14:45:30 +0000 |
| commit | 68e6d5a6bdd07248e78eccbd19eb282a9531fd7c (patch) | |
| tree | cab7b6a3f4bab57135917c736bfa2bee10fc9c26 /gcc/tree-ssa-uninit.c | |
| parent | 4f29e04064c39dfdc23831e41328f5ba84195957 (diff) | |
| download | gcc-68e6d5a6bdd07248e78eccbd19eb282a9531fd7c.zip gcc-68e6d5a6bdd07248e78eccbd19eb282a9531fd7c.tar.gz gcc-68e6d5a6bdd07248e78eccbd19eb282a9531fd7c.tar.bz2 | |
re PR middle-end/81782 (Yet another -Wmaybe-uninitialized false positive with empty array)
2017-12-08 Richard Biener <rguenther@suse.de>
PR middle-end/81782
* tree-ssa-uninit.c (warn_uninitialized_vars): Properly
handle accesses outside of zero-sized vars.
* gcc.dg/uninit-pr81782.c: New testcase.
From-SVN: r255512
Diffstat (limited to 'gcc/tree-ssa-uninit.c')
| -rw-r--r-- | gcc/tree-ssa-uninit.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/tree-ssa-uninit.c b/gcc/tree-ssa-uninit.c index 4096ded..b17b2b1 100644 --- a/gcc/tree-ssa-uninit.c +++ b/gcc/tree-ssa-uninit.c @@ -296,8 +296,8 @@ warn_uninitialized_vars (bool warn_possibly_uninitialized) variable. */ if (DECL_P (base) && ref.size != -1 - && ref.max_size == ref.size - && (ref.offset + ref.size <= 0 + && ((ref.max_size == ref.size + && ref.offset + ref.size <= 0) || (ref.offset >= 0 && DECL_SIZE (base) && TREE_CODE (DECL_SIZE (base)) == INTEGER_CST |