Compiler output: $ gcc -fvar-tracking-uninit -fcompare-debug testcase.c testcase.c:1:0: warning: variable tracking requested, but useless unless producing debug info [enabled by default] gcc: error: testcase.c: -fcompare-debug failure (length)
The failure appears with -g as well, but the warning isn't shown in that case. Tested revisions: r163636 - fail r153685 - fail -- Summary: -fcompare-debug failure with -fvar-tracking-uninit, codegen differences Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: debug AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: zsojka at seznam dot cz GCC host triplet: x86_64-pc-linux-gnu GCC target triplet: x86_64-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45531