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| author | Marek Polacek <polacek@redhat.com> | 2017-05-09 11:21:14 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2017-05-09 11:21:14 +0000 |
| commit | 684f84dea9cb2acf6c61bf461a9d50f6b7c03eca (patch) | |
| tree | 16e450b9cd928ae252b2eb7bf2db23dc8cbacb15 /gcc/testsuite/c-c++-common/Wlogical-op-2.c | |
| parent | 641da50a0c73f734e672f8e6b9e7d2c86bde840d (diff) | |
| download | gcc-684f84dea9cb2acf6c61bf461a9d50f6b7c03eca.zip gcc-684f84dea9cb2acf6c61bf461a9d50f6b7c03eca.tar.gz gcc-684f84dea9cb2acf6c61bf461a9d50f6b7c03eca.tar.bz2 | |
re PR c/80525 (-Wlogical-op confused by undefined integer overflow)
PR c/80525
* c-warn.c (unwrap_c_maybe_const): New.
(warn_logical_operator): Call it.
* c-c++-common/Wlogical-op-1.c: Don't use -fwrapv anymore.
* c-c++-common/Wlogical-op-2.c: New test.
From-SVN: r247786
Diffstat (limited to 'gcc/testsuite/c-c++-common/Wlogical-op-2.c')
| -rw-r--r-- | gcc/testsuite/c-c++-common/Wlogical-op-2.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/testsuite/c-c++-common/Wlogical-op-2.c b/gcc/testsuite/c-c++-common/Wlogical-op-2.c new file mode 100644 index 0000000..6360ef9 --- /dev/null +++ b/gcc/testsuite/c-c++-common/Wlogical-op-2.c @@ -0,0 +1,12 @@ +/* PR c/80525 */ +/* { dg-do compile } */ +/* { dg-options "-Wlogical-op" } */ + +int +fn (int a, int b) +{ + if ((a + 1) && (a + 1)) /* { dg-warning "logical .and. of equal expressions" } */ + return a; + if ((a + 1) || (a + 1)) /* { dg-warning "logical .or. of equal expressions" } */ + return b; +} |