https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110282
--- Comment #4 from CTC <19373742 at buaa dot edu.cn> --- (In reply to Richard Biener from comment #3) > Confirmed behavior also with GCC 10, with -fno-bit-tests -fbit-tests > -fno-ipa-modref -fipa-modref removed. > > Can you please adjust your script to not pointlessly increase the command > line > by adding both positive and neagtive variants of an option? Can you please > try to reduce the set of arbitrary options that reproduce the issue? > > 25kB garbage testcases are painfully enough to even look at. Other fuzzing > people manage to file bugs with < 100 lines of code and a command line that > remotely makes sense. Sorry for the long command lines. This issue can be reproduced with -O3 -fno-dce -fno-ipa-cp -fno-tree-dce -fno-tree-sink.