I just tried to compile the popular bzip2 package with the GNU gcc version 4.5 snapshot 20090409.
The compiler said bzlib.c: In function 'bzopen_or_bzdopen': bzlib.c:1443: warning: offset '2' outside bounds of constant string bzlib.c:1443: warning: offset '3' outside bounds of constant string The source code is if (path==NULL || strcmp(path,"")==0) { This looks like a bogus warning to me. Preprocessed source code attached. No special flags required. -- Summary: possible bogus offset warning Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dcb314 at hotmail dot com GCC host triplet: x86_64-suse-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39748