http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52057
Bug #: 52057 Summary: dropping "const" in assignment gives only a warning Classification: Unclassified Product: gcc Version: 4.6.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassig...@gcc.gnu.org ReportedBy: jens.mau...@gmx.net According to C99 6.5.16.1p1, the following is ill-formed: void * p = (const int *) 0; However, gcc only issues a warning, not an error: > gcc -c -ansi -pedantic 1251.c 1251.c:1:12: warning: initialization discards ‘const’ qualifier from pointer target type [enabled by default] (In C++ mode, the code above results in a hard error, as it should.)