https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66022
Bug ID: 66022 Summary: 4.8.4 build fails with stage 2 and 3 comparison error Product: gcc Version: 4.8.4 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap Assignee: unassigned at gcc dot gnu.org Reporter: jrm at exa dot com Target Milestone: --- Created attachment 35466 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35466&action=edit Shell script used to extract tar ball, obtain pre-reqs, configure and run gcc build Attempting as non-clever a build of 4.8.4 as possible. Same behavior with binutils 2.19.1 or 2.25. Prerequisites obtained w/"download_prerequisites" script (MPFR 2.4.2, GMP 4.3.2 and MPC 0.8.1). Ordinary linux machine: plasma:/opt/SRC-gcc-4.8.4/gcc-4.8.4% cat /etc/issue CentOS release 5.9 (Final) Kernel \r on an \m plasma:/opt/SRC-gcc-4.8.4/gcc-4.8.4% uname -a Linux plasma 2.6.18-348.12.1.el5 #1 SMP Wed Jul 10 05:28:41 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux Last bits of the build log showing failure: gmake[3]: Entering directory `/opt/BUILD-gcc-4.8.4' rm -f stage_current gmake[3]: Leaving directory `/opt/BUILD-gcc-4.8.4' Comparing stages 2 and 3 warning: gcc/cc1-checksum.o differs warning: gcc/cc1plus-checksum.o differs Bootstrap comparison failure! gcc/coverage.o differs gcc/asan.o differs gcc/sel-sched-ir.o differs gcc/passes.o differs gcc/sel-sched.o differs gcc/value-prof.o differs gcc/cfg.o differs gcc/dse.o differs gcc/tree-ssa-pre.o differs gcc/haifa-sched.o differs gcc/sched-deps.o differs gcc/tree-ssa-tail-merge.o differs gcc/cp/class.o differs gcc/cp/semantics.o differs gcc/alloc-pool.o differs gcc/tree-ssa-threadupdate.o differs gmake[2]: *** [compare] Error 1 gmake[2]: Leaving directory `/opt/BUILD-gcc-4.8.4'