Red Hat Bugzilla – Bug 32161
g++ fails to detect when int main() does not have a return statement
Last modified: 2007-04-18 12:32:15 EDT
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g++ detects when non-void functions do not have a return statement.
However, for some reason it does not detect when int main() does not return
Steps to Reproduce:
// g++ detects lack of return statement here
int main ()
// but doesn't detect it here
Actual Results: y.cpp: In function `int foo ()':
y.cpp:4: warning: no return statement in function returning non-void
Expected Results: I would expect to get for main the same warning that I
got for foo.
No, this is correct. ISO C++ [basic.start.main]/5 sais that:
If control reached the end of main without encountering a return statement,
the effect is that of executing
For functions other than main, the standard requires non-void functions
to end with return statement.