this testcase is taken from subversion-1.1.4 subversion/libsvn_delta/svndiff.c
install_gcc40-1/libexec/gcc/powerpc-unknown-linux-gnu/4.0.1/cc1 -fpreprocessed /tmp/t.i -quiet -dumpbase t.c -auxbase-strip t -O2 -Wall -version -o t.s GNU C version 4.0.1 20050429 (prerelease) (powerpc-unknown-linux-gnu) compiled by GNU C version 4.0.1 20050429 (prerelease). GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 t.c: In function 'svn_txdelta_read_svndiff_window': t.c:149: warning: 'ninst' may be used uninitialized in this function -- Summary: possible false positives for '$foo may be used uninitialized in this function' Product: gcc Version: 4.0.1 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: olh at suse dot de CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: powerpc-linux GCC host triplet: powerpc-linux GCC target triplet: powerpc-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21320