[Bug gas/26025] New: riscv gas inserts relocation for BFD_RELOC_RISCV_CFA in last section of file, instead of relevant section

[address@hidden]

https://sourceware.org/bugzilla/show_bug.cgi?id=26025

            Bug ID: 26025
           Summary: riscv gas inserts relocation for BFD_RELOC_RISCV_CFA
                    in last section of file, instead of relevant section
           Product: binutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: address@hidden
  Target Milestone: ---

Created attachment 12562
  --> https://sourceware.org/bugzilla/attachment.cgi?id=12562&action=edit
Assembly triggering the bug

Somehow a specific sequence of Dwarf debug info triggers this bug.

It causes R_RISCV_SET32 and R_RISCV_SUB32 relocations to be added to the last
section of the file, in the attached example that would be
.text.z_DEBUGEND_$P$TEST

When trying to link this it would generate a segfault because it's not the
right section, and an empty one

I'm guessing it's because relocations can't be added in riscv_pre_output_hook
the way it's currently done

Steps to reproduce:
riscv32-linux-as test.s -o test.o
riscv32-linux-ld test.o
riscv32-linux-objdump -r test.o

objdump would show two relocations in the last section that should be in
.debug_frame instead

Same thing happens on 64bit toolchain as well

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