[Bug gas/23939] New: Check frch_cfi_data before use

[wu.heng at zte dot com.cn]

https://sourceware.org/bugzilla/show_bug.cgi?id=23939

            Bug ID: 23939
           Summary: Check frch_cfi_data before use
           Product: binutils
           Version: 2.32 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: wu.heng at zte dot com.cn
  Target Milestone: ---

Created attachment 11421
  --> https://sourceware.org/bugzilla/attachment.cgi?id=11421&action=edit
check var frch_cfi_data before using it

the var "frchain_now->frch_cfi_data" in "dot_cfi_label" function at
dw2gencfi.c:1207 should be checked before use! Program may throw SIGSEGV if
not.

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