[Bug target/80870] [7 Regression] ICE building 7.1.0 sh-elf crosscompiler on macOS

[Anders.Montonen at iki dot fi]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80870

--- Comment #5 from Anders Montonen <Anders.Montonen at iki dot fi> ---
With the patch from comment 4, the GCC 7 branch builds successfully.