[Bug binutils/24460] New: bfd/elf32-arm.c: get_value_helper, uninitialized value used

[pexu at sourceware dot mail.kapsi.fi]

https://sourceware.org/bugzilla/show_bug.cgi?id=24460

            Bug ID: 24460
           Summary: bfd/elf32-arm.c: get_value_helper, uninitialized value
                    used
           Product: binutils
           Version: 2.33 (HEAD)
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: pexu at sourceware dot mail.kapsi.fi
  Target Milestone: ---

Hello.

get_value_helper() doesn't initialize branch_type, its address will be passed
to arm_type_of_stub(), which in turn dereferences and tries to use it:

(Note: Actually, the value is dereferenced on line 4203.)

bfd/elf32-arm.c: In function 'get_value_helper':
bfd/elf32-arm.c:4209:6: error: 'branch_type' is used uninitialized in this
function [-Werror=uninitialized]
   if (branch_type == ST_BRANCH_LONG)
      ^
bfd/elf32-arm.c:10312:27: note: 'branch_type' was declared here
   enum arm_st_branch_type branch_type;
                           ^~~~~~~~~~~


This is related to recent ARMv8.1-M patches a couple of days ago.  Did not
check further if there are other similar problems like this.

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