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| author | Richard Biener <rguenther@suse.de> | 2017-12-14 15:18:16 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-12-14 15:18:16 +0000 |
| commit | c49dac0d87e288f3f0de73006f1d13ad930ff945 (patch) | |
| tree | 871019a30b59d9e1b0d6fe583ffd1c9d728dd7ee | |
| parent | 5bc2904510bf9a10bd4524997750e4eb5bac8f21 (diff) | |
| download | gcc-c49dac0d87e288f3f0de73006f1d13ad930ff945.zip gcc-c49dac0d87e288f3f0de73006f1d13ad930ff945.tar.gz gcc-c49dac0d87e288f3f0de73006f1d13ad930ff945.tar.bz2 | |
re PR tree-optimization/66974 (-Warray-bounds false positive with -O3)
2017-12-14 Richard Biener <rguenther@suse.de>
PR tree-optimization/66974
* gcc.dg/Warray-bounds-24.c: New testcase.
From-SVN: r255642
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/Warray-bounds-24.c | 15 |
2 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 981c3a2..a053fcb 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2017-12-14 Richard Biener <rguenther@suse.de> + PR tree-optimization/66974 + * gcc.dg/Warray-bounds-24.c: New testcase. + +2017-12-14 Richard Biener <rguenther@suse.de> + PR tree-optimization/65258 * gcc.dg/Warray-bounds-23.c: New testcase. diff --git a/gcc/testsuite/gcc.dg/Warray-bounds-24.c b/gcc/testsuite/gcc.dg/Warray-bounds-24.c new file mode 100644 index 0000000..3563173 --- /dev/null +++ b/gcc/testsuite/gcc.dg/Warray-bounds-24.c @@ -0,0 +1,15 @@ +/* { dg-do compile } */ +/* { dg-options "-O3 -Warray-bounds" } */ + +int foo(unsigned order) +{ + int c[3] = {1, 2, 3}; + unsigned i, j; + for (i = 1; i < order; i++) { + for (j = 0; j < i / 2; j++) { + c[j] += c[i] * c[i-j-1]; /* { dg-bogus "array bounds" } */ + c[i-j-1] += c[i] * c[j]; /* { dg-bogus "array bounds" } */ + } + } + return c[0]; +} |