[Bug rtl-optimization/124439] [16 regression] libgnat miscompiled on riscv64 since r16-7891-g4bcf6c461a9b8f

[schwab@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124439

--- Comment #8 from Andreas Schwab <schwab@linux-m68k.org> ---
Bootstrap failure:

make[3]: Entering directory
'/home/abuild/rpmbuild/BUILD/gcc16-16.0.1+git8070-build/gcc-16.0.1+git8070/obj-riscv64-suse-linux/gcc'
cd ada/bldtools/snamest && gnatmake xsnamest && ./xsnamest
gcc -c xsnamest.adb
gcc -c xutil.adb
gnatbind -x xsnamest.ali
gnatlink xsnamest.ali

raised STORAGE_ERROR : stack overflow or erroneous memory access
make[3]: *** [../../gcc/ada/Make-generated.in:41: ada/stamp-snames] Error 1
make[3]: Leaving directory
'/home/abuild/rpmbuild/BUILD/gcc16-16.0.1+git8070-build/gcc-16.0.1+git8070/obj-riscv64-suse-linux/gcc'

There are also testsuite regressions:

Tests that now fail, but worked before (14 tests):

: acats: ce3603a
: acats: ce3604a
: acats: cxaa001
: acats: cxaa002
: acats: cxaa003
: acats: cxaa004
: acats: cxaa005
: acats: cxaa006
: acats: cxaa016
: acats: cxaa020
: acats: cxaa021
: acats: cxaa022
: acats: cxf3a06
: acats: ee3203a