[Bug ipa/101396] [12 Regression] ICE in decompose, at wide-int.h:984 with -flto and incompatible enum class definitions

[xry111 at mengyan1223 dot wang via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101396

--- Comment #3 from Xi Ruoyao <xry111 at mengyan1223 dot wang> ---
Patch sent to gcc-patches:
https://gcc.gnu.org/pipermail/gcc-patches/2021-July/574890.html