[Bug ipa/122058] [16 regression] ICU miscompiled with -O2 -flto -fno-semantic-interposition since r16-4000-g9ee937b2f92a93

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122058

--- Comment #7 from Sam James <sjames at gcc dot gnu.org> ---
Created attachment 62447
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62447&action=edit
numrange_impl.ii.xz

g++ -D_REENTRANT -DU_HAVE_ELF_H=1 -DU_HAVE_STRTOD_L=1 -DU_HAVE_XLOCALE_H=0
-DU_DISABLE_RENAMING=1 -I../../i18n -I../../common -DU_ALL_IMPLEMENTATION
-DU_ATTRIBUTE_DEPRECATED= -DU_I18N_IMPLEMENTATION -O2 -ggdb3 -flto=auto
-fno-semantic-interposition -W -Wall -pedantic -Wpointer-arith -Wwrite-strings
-Wno-long-long -std=c++17 -c -DPIC -fPIC -o numrange_impl.o
../../i18n/numrange_impl.cpp -save-temps