When GCC9 is built with older GCC (4.7) 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 simply get the current activated instance. I was only able to reproduce it on FreeBSD 32-bit but it can affect other 32-bit OSs in my understanding, and even 64-bit on certain cases I believe, although I was not able to reproduce it on 64-bit FreeBSD or Linux. On FreeBSD 12 32-bit the bug reproduces 100% when GCC9 is built with base GCC 4.7. 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
