diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/cpp/Wsignprom.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/cpp/Wsignprom.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/Wsignprom.c b/gcc/testsuite/gcc.dg/cpp/Wsignprom.c new file mode 100644 index 000000000..87d422b79 --- /dev/null +++ b/gcc/testsuite/gcc.dg/cpp/Wsignprom.c @@ -0,0 +1,26 @@ +/* { dg-do preprocess } */ +/* { dg-options "-Wall" } */ + +/* Test that -Wall emits the warnings about integer promotion changing + the sign of an operand. */ + +#if -1 > 0U /* { dg-warning "5:changes sign when promoted" } */ +#endif + +#if 0U + -1 /* { dg-warning "10:changes sign when promoted" } */ +#endif + +#if 0U * -1 /* { dg-warning "10:changes sign when promoted" } */ +#endif + +#if 1U / -2 /* { dg-warning "10:changes sign when promoted" } */ +#endif + +#if -1 % 1U /* { dg-warning "5:changes sign when promoted" } */ +#endif + +#if 1 ? 0U : -1 /* { dg-warning "14:changes sign when promoted" } */ +#endif + +#if 1 ? -1 : 0U /* { dg-warning "9:changes sign when promoted" } */ +#endif |