With fresh git sources and contrib/gcc_update the tests pass: === gcc Summary ===
# of expected passes 133500 # of expected failures 422 # of unsupported tests 2104 gcc-build/gcc/xgcc version 9.0.0 20180730 (experimental) (GCC) I wasn't able to reduce the input to avoid including <time.h> and as it only reproduces without -save-temps, it's not clear how to write a testcase for this one. On Fri, Jul 27, 2018 at 8:01 PM, Joseph Myers <jos...@codesourcery.com> wrote: > On Fri, 27 Jul 2018, Bogdan Harjoc wrote: > >> If a struct contains an anonymous union and both have a field with the >> same name, detect_field_duplicates_hash() will replace one of them >> with NULL. If compilation doesn't stop immediately, it may later call >> lookup_field() on the union, which falsely assumes the union's >> LANG_SPECIFIC array is sorted, and may loop indefinitely because of >> this. >> >> Reproduced on amd64 since gcc-5, on ubuntu-18.04 and gentoo. >> >> The patch falls back to iterating via DECL_CHAIN if there was an error >> earlier during compilation. > > The patch should also add a testcase to the testsuite (which fails before > and passes after the patch). > >> I ran the gcc testsuite with the result (the FAIL seems unrelated to the >> patch): >> >> FAIL: gcc.dg/cpp/_Pragma3.c (test for excess errors) > > You should use contrib/gcc_update --touch to get timestamps in the right > order when checking out. This failure is a symptom of badly ordered > timestamps. > > -- > Joseph S. Myers > jos...@codesourcery.com
