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| author | Stefan Schulze Frielinghaus <stefansf@linux.ibm.com> | 2020-05-05 19:44:19 +0200 |
|---|---|---|
| committer | Stefan Schulze Frielinghaus <stefansf@linux.ibm.com> | 2020-05-18 20:04:25 +0200 |
| commit | 2c832ffedf06ff614fc36c44ab6c892d84075e08 (patch) | |
| tree | 209b08caabf201f8890e8898bcf27575261a7f82 /gcc | |
| parent | be464161b4ae128681958d94aa460531cf30e0a4 (diff) | |
| download | gcc-2c832ffedf06ff614fc36c44ab6c892d84075e08.zip gcc-2c832ffedf06ff614fc36c44ab6c892d84075e08.tar.gz gcc-2c832ffedf06ff614fc36c44ab6c892d84075e08.tar.bz2 | |
tree-optimization: Fix use of uninitialized variables warnings [PR94952]
While bootstrapping GCC on S/390 with --enable-checking=release several
warnings about use of uninitialized variables bitpos, bitregion_start, and
bitregion_end of function pass_store_merging::process_store are raised.
According to PR94952 these seem to be false positives which are silenced by
initialising the mentioned variables.
Bootstrapped on S/390. Ok for master and releases/gcc-10 assuming that
regtest succeeds (still running but I don't see a reason why it
should fail)?
gcc/ChangeLog:
2020-05-18 Stefan Schulze Frielinghaus <stefansf@linux.ibm.com>
PR tree-optimization/94952
* gimple-ssa-store-merging.c (pass_store_merging::process_store):
Initialize variables bitpos, bitregion_start, and bitregion_end in
order to silence warnings about use of uninitialized variables.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/gimple-ssa-store-merging.c | 4 |
2 files changed, 9 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 51b5b6c..0a1ff05 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2020-05-18 Stefan Schulze Frielinghaus <stefansf@linux.ibm.com> + + PR tree-optimization/94952 + * gimple-ssa-store-merging.c (pass_store_merging::process_store): + Initialize variables bitpos, bitregion_start, and bitregion_end in + order to silence warnings about use of uninitialized variables. + 2020-05-18 Carl Love <cel@us.ibm.com> PR target/94833 diff --git a/gcc/gimple-ssa-store-merging.c b/gcc/gimple-ssa-store-merging.c index 2575351..c8e1877 100644 --- a/gcc/gimple-ssa-store-merging.c +++ b/gcc/gimple-ssa-store-merging.c @@ -4668,8 +4668,8 @@ pass_store_merging::process_store (gimple *stmt) { tree lhs = gimple_assign_lhs (stmt); tree rhs = gimple_assign_rhs1 (stmt); - poly_uint64 bitsize, bitpos; - poly_uint64 bitregion_start, bitregion_end; + poly_uint64 bitsize, bitpos = 0; + poly_uint64 bitregion_start = 0, bitregion_end = 0; tree base_addr = mem_valid_for_store_merging (lhs, &bitsize, &bitpos, &bitregion_start, &bitregion_end); |