Date: Sun, 06 Sep 2020 15:17:56 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 249070] Using backtrace() from libexecinfo causes program to fail with "libunwind: EHHeaderParser::decodeTableEntry: bad fde: CIE ID is not zero" Message-ID: <bug-249070-227-PinxttzDOo@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-249070-227@https.bugs.freebsd.org/bugzilla/> References: <bug-249070-227@https.bugs.freebsd.org/bugzilla/>
index | next in thread | previous in thread | raw e-mail
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=249070 Dimitry Andric <dim@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|New |Open Assignee|bugs@FreeBSD.org |dim@FreeBSD.org --- Comment #2 from Dimitry Andric <dim@FreeBSD.org> --- This is sort of a duplicate of bug 241562, which was solved in base r354418, by turning on unwind tables by default for non-amd64 arches. The example program fails because there is no unwind information embedded in the tracer functions in libexecinfo. As a workaround, you can either apply the following diff, then rebuild and reinstall libexecinfo: Index: lib/libexecinfo/Makefile =================================================================== --- lib/libexecinfo/Makefile (revision 365364) +++ lib/libexecinfo/Makefile (working copy) @@ -11,6 +11,8 @@ SHLIB_MAJOR= 1 INCS= execinfo.h SRCS= backtrace.c symtab.c unwind.c +CFLAGS+= -funwind-tables + LIBADD= elf MAN= backtrace.3 Alternatively, base r354418 can be backported to releng/12.1, but that would require a full rebuild of clang, *and* a rebuild of libexecinfo, so that seems overkill to me. I'm unsure whether this is serious enough to warrant an Errata Notice. -- You are receiving this mail because: You are the assignee for the bug.help
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-249070-227-PinxttzDOo>