https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121623
--- Comment #12 from Frank Scheiner <frank.scheiner at web dot de> --- (In reply to Sam James from comment #10) > If the theory is correct, the stage2 doesn't matter (stage2 or stage3, or > the 'stage3' from your bypass of the bootstrap comparison). Just get the > preprocessed source and it should fail when you append -fcompare-debug to > the command line. Ok, but how can I get the preprocessed source for `gcc.build.lnx/stageX-gcc/trans-mem.o`? I still have the sources from RC1 built until the comparison error, so stage{1,2,3}-[...] dirs. For the patched bootstraps I only see `stage1-[...]` and `prev-[...]` dirs. But I don't know how to rebuild/preprocess just that needed file.