Date: Sun, 28 Feb 2016 04:46:35 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 207359] projects/clang380-import for TARGET_ARCH=powerpc64 via powerpc64-gcc : c++ exceptions unbounded loop in _Unwind_RaiseException (9 line program) Message-ID: <bug-207359-8-6E72vBL6BV@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-207359-8@https.bugs.freebsd.org/bugzilla/> References: <bug-207359-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D207359 --- Comment #9 from Mark Millard <markmi@dsl-only.net> --- A find over /usr/src/ with egrep use suggests that the later files listed a= re files that use the cfa fields. They match the pattern: [.>]cfa_(offset|reg|exp|how) /usr/src/contrib/gcc/config/mips/linux-unwind.h /usr/src/contrib/gcc/config/rs6000/linux-unwind.h /usr/src/contrib/gcc/config/rs6000/darwin-fallback.c /usr/src/contrib/gcc/config/i386/linux-unwind.h /usr/src/contrib/gcc/config/sparc/linux-unwind.h /usr/src/contrib/gcc/config/s390/tpf-unwind.h /usr/src/contrib/gcc/config/s390/linux-unwind.h /usr/src/contrib/gcc/unwind-dw2.c /usr/src/contrib/gcc/dwarf2out.c /usr/src/contrib/gdb/gdb/dwarf2-frame.c /usr/src/contrib/binutils/gas/dw2gencfi.c /usr/src/contrib/binutils/binutils/dwarf.c And _Unwind_FrameState is mentioned in each of: /usr/src/contrib/gcc/config/mips/linux-unwind.h /usr/src/contrib/gcc/config/rs6000/linux-unwind.h /usr/src/contrib/gcc/config/rs6000/darwin-fallback.c /usr/src/contrib/gcc/config/rs6000/darwin-unwind.h /usr/src/contrib/gcc/config/i386/linux-unwind.h /usr/src/contrib/gcc/config/sparc/linux-unwind.h /usr/src/contrib/gcc/config/s390/tpf-unwind.h /usr/src/contrib/gcc/config/s390/linux-unwind.h /usr/src/contrib/gcc/config/ia64/unwind-ia64.c /usr/src/contrib/gcc/config/ia64/linux-unwind.h /usr/src/contrib/gcc/doc/tm.texi /usr/src/contrib/gcc/unwind-sjlj.c /usr/src/contrib/gcc/ChangeLog-2006 /usr/src/contrib/gcc/ChangeLog-2001 /usr/src/contrib/gcc/unwind.inc /usr/src/contrib/gcc/unwind-dw2.h /usr/src/contrib/gcc/unwind-dw2.c /usr/src/contrib/gcc/ChangeLog-2004 /usr/src/contrib/gcc/ChangeLog-2003 That in turn suggests that they are most(?) of the files that would be tied= to any attempt to have DW_CFA_remember_state/DW_CFA_restore_state save and res= tore the cfa information. One possibility is moving the fields into the saved/restored area (regs, al= ong with the contained fields prev and reg). Access notation would then be based on: ->regs.cfa_offset and .regs.cfa_offset ->regs.cfa_reg and .regs.cfa_reg ->regs.cfa_exp and .regs.cfa_exp ->regs.cfa_how and .regs.cfa_how --=20 You are receiving this mail because: You are the assignee for the bug.=
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