http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59350
--- Comment #8 from Dmitry G. Dyachenko <dimhen at gmail dot com> --- (In reply to Jakub Jelinek from comment #6) > Still can't reproduce. PASS /home/dimhen/bin/gcc_205461_yes/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/cc1plus -fpreprocessed x.ii -march=corei7 -mmmx -mno-3dnow -msse -msse2 -msse3 -mssse3 -mno-sse4a -mcx16 -msahf -mno-movbe -mno-aes -mno-pclmul -mpopcnt -mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop -mno-bmi -mno-bmi2 -mno-tbm -mno-avx -mno-avx2 -msse4.2 -msse4.1 -mno-lzcnt -mno-rtm -mno-hle -mno-rdrnd -mno-f16c -mno-fsgsbase -mno-rdseed -mno-prfchw -mno-adx -mfxsr -mno-xsave -mno-xsaveopt -mno-avx512f -mno-avx512er -mno-avx512cd -mno-avx512pf --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=8192 -mtune=corei7 -quiet -dumpbase x.ii -auxbase-strip x.o -g -O1 -version -fpreprocessed -o /tmp/ccbEj5NK.s FAIL prev.cmd -march=corei7 -mtune=corei7 valgrind --tool=memcheck --track-origins=yes /home/dimhen/bin/gcc_205461_yes/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/cc1plus -fpreprocessed x.ii -march=corei7 -mmmx -mno-3dnow -msse -msse2 -msse3 -mssse3 -mno-sse4a -mcx16 -msahf -mno-movbe -mno-aes -mno-pclmul -mpopcnt -mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop -mno-bmi -mno-bmi2 -mno-tbm -mno-avx -mno-avx2 -msse4.2 -msse4.1 -mno-lzcnt -mno-rtm -mno-hle -mno-rdrnd -mno-f16c -mno-fsgsbase -mno-rdseed -mno-prfchw -mno-adx -mfxsr -mno-xsave -mno-xsaveopt -mno-avx512f -mno-avx512er -mno-avx512cd -mno-avx512pf --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=8192 -mtune=corei7 -quiet -dumpbase x.ii -auxbase-strip x.o -g -O1 -version -fpreprocessed -o /tmp/ccbEj5NK.s [...] ==575== Conditional jump or move depends on uninitialised value(s) ==575== at 0x1047E6E: register_active_defs(df_ref_d**) (sparseset.h:147) ==575== by 0x1047F02: update_df_init(rtx_def*, rtx_def*) [clone .isra.14] (fwprop.c:892) ==575== by 0x599FD3: try_fwprop_subst(df_ref_d*, rtx_def**, rtx_def*, rtx_def*, bool) (fwprop.c:960) ==575== by 0x10489E3: forward_propagate_into(df_ref_d*) (fwprop.c:1340) ==575== by 0x10490B7: (anonymous namespace)::pass_rtl_fwprop::execute() (fwprop.c:1477) ==575== by 0xAF9149: execute_one_pass(opt_pass*) (passes.c:2215) ==575== by 0xAF93F5: execute_pass_list(opt_pass*) (passes.c:2268) ==575== by 0xAF9407: execute_pass_list(opt_pass*) (passes.c:2269) ==575== by 0x88B058: expand_function(cgraph_node*) (cgraphunit.c:1763) ==575== by 0x88D05F: compile() (cgraphunit.c:1868) ==575== by 0x88D6B4: finalize_compilation_unit() (cgraphunit.c:2280) ==575== by 0x6893A6: cp_write_global_declarations() (decl2.c:4431) ==575== Uninitialised value was created by a heap allocation ==575== at 0x4A06B2D: malloc (vg_replace_malloc.c:291) ==575== by 0x1163187: xmalloc (xmalloc.c:147) ==575== by 0xB8CEA4: sparseset_alloc(unsigned long) (sparseset.c:33) ==575== by 0x1047932: fwprop_init() (fwprop.c:1421) ==575== by 0x104902A: (anonymous namespace)::pass_rtl_fwprop::execute() (fwprop.c:1461) ==575== by 0xAF9149: execute_one_pass(opt_pass*) (passes.c:2215) ==575== by 0xAF93F5: execute_pass_list(opt_pass*) (passes.c:2268) ==575== by 0xAF9407: execute_pass_list(opt_pass*) (passes.c:2269) ==575== by 0x88B058: expand_function(cgraph_node*) (cgraphunit.c:1763) ==575== by 0x88D05F: compile() (cgraphunit.c:1868) ==575== by 0x88D6B4: finalize_compilation_unit() (cgraphunit.c:2280) ==575== by 0x6893A6: cp_write_global_declarations() (decl2.c:4431) [..] ERROR SUMMARY: 130 errors from 38 contexts (suppressed: 0 from 0)
