https://sourceware.org/bugzilla/show_bug.cgi?id=34174
Bug ID: 34174
Summary: [RISC-V ld] relax ignores local NORVC state
Product: binutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: l784896635 at gmail dot com
Target Milestone: ---
During RISC-V linker regression/conformance testing, I reduced this
linker-stage issue.
## Actual behavior
GNU ld.bfd relaxes the call sequence in the local norvc region into the 16-bit
encoding 0xa021 (disassembled as j), producing an RVC jump where local code
generation state explicitly disabled RVC.
## Expected behavior
The linker should produce the semantically correct RISC-V output for this
reduced testcase, or issue a controlled diagnostic when the input is outside
the supported semantics. It should not silently emit a wrong output, lose
required metadata/relocations/attributes, miss a required relaxation, report a
false range/non-PIC/non-convergence error, or crash.
## Test input and intent
A mixed rvc/norvc object uses a non-compressed tail call inside a local .option
norvc region. Linker relaxation must not emit a compressed jump there.
## Target and route
- Target tracker: GNU binutils / ld
- Target ISA / ABI: `rv64imac` / `lp64`
- First failing stage: link
- Toolchain route used in reduction: gas+ld.bfd
## Reproduction evidence
3 clean reproductions in packaged run1..run3 evidence show the input object
contains an auipc+jr call sequence at offset 0xA, but the final ld.bfd output
contains the 16-bit j encoding at the corresponding site; the unbuffered
sibling variant also fails at link time with an alignment-padding error caused
by the same unexpected shrink.
The reproducer bundle contains the reduced testcase plus three local
reproduction runs. The evidence is text-only: linker outputs, disassembly,
relocation dumps, symbol dumps, and short summaries where available.
Reproducer bundle:
https://github.com/anonymous25989/riscv-linker-48-reproducers/raw/main/r48-v2/attachments/gnu_003_relax_ignores_local_norvc_state_reproducer.zip
## Notes
This is reported as a linker-stage behavior defect found during RISC-V linker
regression/conformance testing. The reduced testcase is intentionally small so
that the failure mode is easy to inspect. The attached evidence is already
reproduced; no additional local path or private workspace is required.
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