[Bug bootstrap/91825] New: Top-of-tree GCC does not bootstrap (uninitialized warning)

[sje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91825

            Bug ID: 91825
           Summary: Top-of-tree GCC does not bootstrap (uninitialized
                    warning)
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sje at gcc dot gnu.org
  Target Milestone: ---

GCC bootstrap currently fails with this error:

/home/sellcey/tot/src/gcc/gcc/expmed.c: In function ‘rtx_def*
emit_store_flag_1(rtx, rtx_code, rtx, rtx, machine_mode, int, int,
machine_mode)’:
/home/sellcey/tot/src/gcc/gcc/expmed.c:5602:19: error: ‘int_mode’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
 5602 |   scalar_int_mode int_mode;
      |                   ^~~~~~~~


This appears to be due to:

https://gcc.gnu.org/ml/gcc-patches/2019-09/msg00923.html