[Bug jit/64721] SIGABRT becomes a SIGSEGV after invoking gcc_jit_context_compile[_to_file] within a process

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64721

--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #1)
> (B) seems best from the POV of a library that aims to be thread-safe: don't
> touch signal-handlers when inside libgccjit.  I have a patch for this.

Patch posted for review as
https://gcc.gnu.org/ml/gcc-patches/2015-01/msg01958.html