https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104069
--- Comment #30 from Sergei Trofimovich <slyfox at gcc dot gnu.org> --- > configure: WARNING: unrecognized options: --disable-werror > In function 'bigger_buffer', > inlined from '__libdw_gunzip' at gzip.c:374:12: > gzip.c:96:9: error: pointer may be used after 'realloc' > [-Werror=use-after-free] > 96 | b = realloc (state->buffer, more -= 1024); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > gzip.c:94:13: note: call to 'realloc' here > 94 | char *b = realloc (state->buffer, more); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > cc1: all warnings being treated as errors > make[2]: *** [Makefile:715: gzip.o] Error 1 You should be able to extract preprocessed file using https://gcc.gnu.org/bugs/#need: you will need to find exact `gcc` invocation that causes build failure, add `-save-temps` parameter to it, grab '*.i' file and attach it along with exact command you used to produce it.
