diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/cpp/undef1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/cpp/undef1.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/undef1.c b/gcc/testsuite/gcc.dg/cpp/undef1.c new file mode 100644 index 00000000000..024efcede65 --- /dev/null +++ b/gcc/testsuite/gcc.dg/cpp/undef1.c @@ -0,0 +1,14 @@ +/* { dg-do preprocess } */ + +/* 6.9.3.11: ...If there are sequences of preprocessing tokens within + the list of arguments that would otherwise act as preprocessing + directives, the behavior is undefined. + + I choose to make this a hard error. It definitely should not cause + a core dump. */ + +#define foo(bar) bar + +foo( blah +#undef foo /* { dg-error "may not be used inside" "foo(#undef foo)" } */ + blah ) |