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[Bug libc/15407] Partial frame info in sysdeps/x86_64/start.S
- From: "roland at gnu dot org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Fri, 26 Apr 2013 22:17:34 +0000
- Subject: [Bug libc/15407] Partial frame info in sysdeps/x86_64/start.S
- Auto-submitted: auto-generated
- References: <bug-15407-131 at http dot sourceware dot org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=15407
--- Comment #9 from Roland McGrath <roland at gnu dot org> 2013-04-26 22:17:34 UTC ---
I don't understand how the extra FDEs gold emits would be related.
All the FDEs are for disjoint PC ranges, so why would the unwinder even so
those others? Please investigate further what exactly is really going on. The
only thing I can imagine (other than unrelated unwinder bugs) is that the bad
CFI for _start is causing the unwinder to think that a PC in one of the PLT
ranges is part of the call stack, but given that it's cfi_undefined (rip), I
can't think of a way that could be true.
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