Date: Fri, 03 Jul 2020 19:56:47 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 247738] on powerpc64 bc exits with segfault right after starting it Message-ID: <bug-247738-227-MKHhAN8IRc@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-247738-227@https.bugs.freebsd.org/bugzilla/> References: <bug-247738-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247738 --- Comment #7 from Leandro Lupori <luporl@FreeBSD.org> --- Created attachment 216180 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=216180&action=edit Disable -flto on powerpc64 The attached patch fixes the issue for me. There is probably a bug with LLVM's LTO for PowerPC64 (but, at least on PPC64, it doesn't seem related to floating point incompatibilities, as a comment in the Makefile suggests). It is probably worth to investigate why LLVM LTO is producing incorrect code, but disabling LTO for gh-bc should be fine while LLVM is not fixed (if this is really the case). For the record, the code fragment that is crashing is jumping to a pointer to a TOC entry, instead of using the pointer stored at that TOC entry, that correctly points to main(). -- You are receiving this mail because: You are the assignee for the bug.help
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