http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51677
Bug #: 51677 Summary: don't suggest giving main() __attribute__((const)) Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassig...@gcc.gnu.org ReportedBy: b.r.longb...@gmail.com With -O -Wsuggest-attribute=const, the following line will generate a warning: int main() {} This behavior is bad for 2 reasons: 1. Having an empty main() is quite useful for testing, as it allows linking to succeed. 2. __attribute__((const)) is only meaningful when you can call the function. Tested: 4.6.{0..2}, trunk r182496