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| author | Martin Sebor <msebor@redhat.com> | 2017-11-16 16:48:36 +0000 |
|---|---|---|
| committer | Martin Sebor <msebor@gcc.gnu.org> | 2017-11-16 09:48:36 -0700 |
| commit | 913f8c088eb3b2d6e2c7a55954de4e0c38d78766 (patch) | |
| tree | eca86ba21f40c7e769aa2e9e6e141f139453b755 | |
| parent | b00ff621f6eea4beb350220566bf26120a9ce416 (diff) | |
| download | gcc-913f8c088eb3b2d6e2c7a55954de4e0c38d78766.zip gcc-913f8c088eb3b2d6e2c7a55954de4e0c38d78766.tar.gz gcc-913f8c088eb3b2d6e2c7a55954de4e0c38d78766.tar.bz2 | |
PR middle-end/63477 - Bogus warning with -O3 -Warray-bounds: array subscript
PR middle-end/63477 - Bogus warning with -O3 -Warray-bounds: array subscript
is above array bounds
gcc/testsuite/ChangeLog:
PR middle-end/63477
* gcc.dg/pr63477.c: New test.
From-SVN: r254833
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr63477.c | 36 |
2 files changed, 41 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 30082bf..a932323 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2017-11-16 Martin Sebor <msebor@redhat.com> + PR middle-end/63477 + * gcc.dg/pr63477.c: New test. + +2017-11-16 Martin Sebor <msebor@redhat.com> + PR tree-optimization/82588 PR tree-optimization/82583 * c-c++-common/Warray-bounds.c: New test. diff --git a/gcc/testsuite/gcc.dg/pr63477.c b/gcc/testsuite/gcc.dg/pr63477.c new file mode 100644 index 0000000..8fb2f26 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr63477.c @@ -0,0 +1,36 @@ +/* PR middle-end/63477 - Bogus warning with -O3 -Warray-bounds: array + subscript is above array bounds + { dg-do compile } + { dg-options "-O3 -Warray-bounds" } */ + +#define MAX_VAL 16 + +typedef struct +{ + int itemList[MAX_VAL + 1]; + unsigned int numItems; +} ItemList; + +void FrobList (ItemList *l) +{ + unsigned int i; + + for (i = 0; i < l->numItems - 1; i++) + { + int minVal = l->itemList[i]; + + unsigned int minIdx = i; + unsigned int idx; + + for (idx = i + 1; idx < l->numItems; ++idx) { + + if (l->itemList[idx] < minVal) /* { dg-bogus "\\\[-Warray-bounds]" } */ + { + minVal = l->itemList[idx]; + minIdx = idx; + } + } + + l->itemList[i] = l->itemList[minIdx]; + } +} |