------- Comment #8 from ro at techfak dot uni-bielefeld dot de 2008-10-07
16:04 -------
Subject: Re: [4.4 regression] All Solaris/x86 eh tests fail
ebotcazou at gcc dot gnu dot org writes:
> I think that we should assemble some C code with CFI directives and see
> whether
> the resulting .eh_frame is read-only; if so, HAVE_GAS_CFI_DIRECTIVE must be
> set
> to 0 instead of 1. This should discriminate between 2.18 and upcoming 2.19.
That's what I did in my patch at
http://gcc.gnu.org/ml/gcc-patches/2008-10/msg00249.html
I could just take the current test code for gcc_cv_as_cfi_directive as is
and inspect the object file with objdump on Solaris. Using C code directly
with gcc -fexceptions -fdwarf2-cfi-asm didn't work since it relies upon the
bootstrap compiler being gcc and sufficiently recent to support
-fdwarf2-cfi-asm, leading to comparions failures upon a mismatch.
> That the non-C compilers still emit .eh_frame directly is unexpected I'd
> think.
I think I'll raise a separate PR for that and add rth to the Cc:.
Rainer
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37463
