[Bug bootstrap/80887] New: gnat bootstrap fails at s-regpat.o: raised STORAGE_ERROR : stack overflow or erroneous memory access

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80887

            Bug ID: 80887
           Summary: gnat bootstrap fails at s-regpat.o: raised
                    STORAGE_ERROR : stack overflow or erroneous memory
                    access
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: redi at gcc dot gnu.org
  Target Milestone: ---

I just got the following building trunk on x86_64-pc-linux-gnu with no special
flags, just $srcdir/configure --enable-languages=c,c++,ada --enable-werror


/home/jwakely/src/gcc/bootstrap/./gcc/xgcc
-B/home/jwakely/src/gcc/bootstrap/./gcc/ -B/usr/local/x86_64-pc-linux-gnu/bin/
-B/usr/local/x86_64-pc-linux-gnu/lib/ -isystem
/usr/local/x86_64-pc-linux-gnu/include -isystem
/usr/local/x86_64-pc-linux-gnu/sys-include    -c -g -O2 -m32 -fpic  -W -Wall
-gnatpg -nostdinc -m32  s-regpat.adb -o s-regpat.o

raised STORAGE_ERROR : stack overflow or erroneous memory access
../gcc-interface/Makefile:296: recipe for target 's-regpat.o' failed


According to Bug 80867 comment 5 and Bug 80867 comment 6 this also happens on
darwin and solaris. It started between r248423 and r248462