Considering the sample code:
int round(int i) { return i;}
Compiled with gcc 4.4.3:
$ gcc -Wall round.c -c
round.c:1: warning: conflicting types for built-in function 'round'
If I add the -fmudflap option, the warning disappears:
$ gcc -Wall round.c -c -fmudflap
$
I guess it should still warn.
--
Summary: -fmudflap prevents 'conflicting types' warning
Product: gcc
Version: 4.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: christophe dot lyon at st dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42885
