[Bug 206384] llvm libunwind segfaults while building lang/polyml

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Tue Jan 19 21:33:29 UTC 2016


--- Comment #3 from Ed Maste <emaste at freebsd.org> ---
By comparison, the equivalent struct in the GCC unwinder:

(lldb) p sizeof(_Unwind_FrameState)
(unsigned long) $3 = 384

as it has storage for only 18 registers:

(lldb) p sizeof(fs.regs.reg) / sizeof(fs.regs.reg[0])
(unsigned long) $9 = 18

while LLVM's libunwind has storage for:
kMaxRegisterNumber = 120

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