diff options
Diffstat (limited to 'gcc/testsuite/g++.dg/torture/pr33887-1.C')
-rw-r--r-- | gcc/testsuite/g++.dg/torture/pr33887-1.C | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/torture/pr33887-1.C b/gcc/testsuite/g++.dg/torture/pr33887-1.C new file mode 100644 index 000000000..2f17d9583 --- /dev/null +++ b/gcc/testsuite/g++.dg/torture/pr33887-1.C @@ -0,0 +1,44 @@ +/* { dg-do run } */ + +extern "C" void abort (void); +struct S { unsigned int i : 24; } x; +void __attribute__((noinline)) test1() +{ + if (--x.i != 0x00ffffff) + abort (); + if (x.i != 0x00ffffff) + abort (); +} +void __attribute__((noinline)) test2() +{ + if (x.i-- != 0) + abort (); + if (x.i != 0x00ffffff) + abort (); +} +void __attribute__((noinline)) test3() +{ + if (++x.i != 0) + abort (); + if (x.i != 0) + abort (); +} +void __attribute__((noinline)) test4() +{ + if (x.i++ != 0x00ffffff) + abort (); + if (x.i != 0) + abort (); +} +int main() +{ + x.i = 0; + test1(); + x.i = 0; + test2(); + x.i = 0x00ffffff; + test3(); + x.i = 0x00ffffff; + test4(); + return 0; +} |