https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636
--- Comment #12 from George R. Goffe <grgoffe at yahoo dot com> --- Hi, I am seeing a failure in stream_out_histogram_value building the last release of python 2.x ( 2.7.18). I just posted the preprocessed c code for this problem. Here is the failing command and following output: /tools/python/Python-2.7.18# gcc -S --save-temps -pthread -c -fno-strict-aliasing -g -O2 -g -O0 -Wall -Wstrict-prototypes -fprofile-use -fprofile-correction -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -I. -IInclude -I./Include -fPIC -DPy_BUILD_CORE -o Objects/abstract.o Objects/abstract.c during IPA pass: fnsummary Objects/abstract.c:3124:1: internal compiler error: in stream_out_histogram_value, at value-prof.c:336 3124 | } | ^ 0x70b9a4 stream_out_histogram_value(output_block*, histogram_value_t*) ../../gcc/gcc/value-prof.c:336 0x16170b0 output_gimple_stmt ../../gcc/gcc/gimple-streamer-out.c:196 0x16170b0 output_bb(output_block*, basic_block_def*, function*) ../../gcc/gcc/gimple-streamer-out.c:231 0xbfa9b4 output_function ../../gcc/gcc/lto-streamer-out.c:2198 0xbfa9b4 lto_output() ../../gcc/gcc/lto-streamer-out.c:2530 0xc91241 write_lto ../../gcc/gcc/passes.c:2612 0xc91241 ipa_write_summaries_1 ../../gcc/gcc/passes.c:2676 0xc91241 ipa_write_summaries() ../../gcc/gcc/passes.c:2731 0x9230ab ipa_passes ../../gcc/gcc/cgraphunit.c:2650 0x9230ab symbol_table::compile() ../../gcc/gcc/cgraphunit.c:2737 0x924d3c symbol_table::compile() ../../gcc/gcc/cgraphunit.c:2717 0x924d3c symbol_table::finalize_compilation_unit() ../../gcc/gcc/cgraphunit.c:2984