https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26854
--- Comment #131 from lucier at math dot purdue.edu --- Created attachment 37761 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37761&action=edit time/memory report compiling _num.i with -O2 This bug, perhaps related, https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37448 was just closed, so I thought I would try to compile all.i, compiler.i, and _num.i with today's mainline heine:~/Downloads> /pkgs/gcc-mainline/bin/gcc -v Using built-in specs. COLLECT_GCC=/pkgs/gcc-mainline/bin/gcc COLLECT_LTO_WRAPPER=/pkgs/gcc-mainline/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../../gcc-mainline/configure --prefix=/pkgs/gcc-mainline --enable-checking=release --enable-languages=c --disable-multilib Thread model: posix gcc version 6.0.0 20160222 (experimental) (GCC) with the options: /pkgs/gcc-mainline/bin/gcc -v -c -O2 -fmem-report -ftime-report all.i -save-temps > & ! report-compiler-all I had to kill the compiles of all.i and compiler.i when memory usage got up to 32GB. This file is the time and memory report from compiling _num.i.