I'm using gcc 3.4.5, and I was looking into a weird condition. The following program compiles OK:
#include <stdio.h> int alloc() { return 0; } int main(int argc, char* argv[]) { printf("Testing!\n"); if(alloc() == 0)goto Radhe; return 0; Radhe: printf("Hello\n"); } The result is a program which prints "Testing", then "Hello", and then exits. I and a few other people expect that the compiler would generate an error during compile, because main should return an int, and not all code paths have a return statement; however, both gcc and msvc are compiling this OK. added note: this bug was recently discussed on the NTDEV mailing list. -- Summary: can return OK from "int main()" without a return statement by using a goto before the return Product: gcc Version: 3.4.5 Status: UNCONFIRMED Severity: minor Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: bmcfadden at cdp dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31977