When GCC9 is built with an older GCC (4.2.1) on FreeBSD 32-bit on PowerPC an ICE is generated on stage 1 when selftests are performed.
After an investigation the root cause was traced to an unnecessary and harmful instantiation of a new dump_context singleton class in order to get the current activated instance. I was only able to reproduce it on FreeBSD 32-bit but it can probably affect other 32-bit OSs in my understanding, and accordingly to the FreeBSD Community it can affect building GCC on FreeBSD 64-bit too. On FreeBSD 12.1 32-bit the bug reproduces 100% when GCC9 is built with base GCC 4.2.1. For additional details, please see: * https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242506 and * https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243666 Gustavo Romero (1): Fix use of singleton in optinfo framework gcc/dumpfile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.7.4
