On 17/09/18 19:55, Richard Sandiford wrote:
Which part of the backend needs this?  I couldn't tell from a quick
grep where the call came from.
It wasn't called directly, but from builtins.c and df-scan.c.

I needed this for GCC7, but apparently in newer source-bases the problem has been fixed another way.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83423

I'll drop this patch.

Andrew

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