https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71399
--- Comment #5 from Ludovic Courtès <ludo at gnu dot org> --- I tried this time with GCC 5.4.0, and with BOOT_CFLAGS='-O2 -g0 -da'. I'm also getting the failure: make[3]: Leaving directory '/tmp/guix-build-gcc-5.4.0.drv-0/build' Comparing stages 2 and 3 warning: gcc/cc1plus-checksum.o differs warning: gcc/cc1-checksum.o differs Bootstrap comparison failure! gcc/c/c-parser.o differs gcc/c/c-typeck.o differs gcc/cp/semantics.o differs gcc/cp/optimize.o differs gcc/c-family/cilk.o differs gcc/coverage.o differs gcc/df-scan.o differs gcc/double-int.o differs gcc/dwarf2cfi.o differs gcc/fold-const.o differs gcc/ipa-inline.o differs gcc/omp-low.o differs gcc/real.o differs gcc/simplify-rtx.o differs gcc/tree-dfa.o differs gcc/tree-nested.o differs gcc/tree-inline.o differs gcc/tree-switch-conversion.o differs gcc/tree-ssa-math-opts.o differs gcc/tree-ssa-sccvn.o differs gcc/gcov-dump.o differs gcc/libgcov-driver-tool.o differs libiberty/simple-object-xcoff.o differs libiberty/fibheap.o differs libiberty/sort.o differs libiberty/pic/simple-object-xcoff.o differs libiberty/pic/fibheap.o differs libiberty/pic/sort.o differs Makefile:21400: recipe for target 'compare' failed make[2]: *** [compare] Error 1 make[2]: Leaving directory '/tmp/guix-build-gcc-5.4.0.drv-0/build' I have attached the diff of stage[23]-gcc/real.c.192r.expand in the hope it would provide useful info. I have hundreds of GiBs of RTL dumps to share, so let me know what you'd like to see! :-)
