On Thu, 6 Aug 2020, Maciej W. Rozycki wrote:
> Complement commit b932f770f70d ("x86_64 frame unwind info"), SVN r46374,
> <https://gcc.gnu.org/ml/gcc-patches/2001-10/msg00860.html>, and replace
> `-fexceptions -fnon-call-exceptions' with `-fasynchronous-unwind-tables'
> in LIB2_DIVMOD_FUNCS compilation flags so as to provide unwind tables
> for the affected functions while not pulling the unwinder proper, which
> is not required here.
>
> Remove the ARM overrides accordingly, retaining the hook infrastructure
> however, and make the ARM test case a generic one.
>
> Beyond saving program space it fixes a RISC-V glibc build error due to
> unsatisfied `malloc' and `free' references from the unwinder causing
> link errors with `ld.so' where libgcc has been built at -O0.
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Maciej
