https://sourceware.org/bugzilla/show_bug.cgi?id=34267
Bug ID: 34267
Summary: [RISC-V] GNU ld.bfd x3 reg usage conflict not rejected
Product: binutils
Version: 2.45
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: l784896635 at gmail dot com
Target Milestone: ---
Created attachment 16776
--> https://sourceware.org/bugzilla/attachment.cgi?id=16776&action=edit
Reduced testcase
I reduced this to the attached RISC-V testcase and can reproduce it 3/3 times.
Observed: GNU ld.bfd 2.45 returns success for incompatible GP+TMP inputs in
RV32 and RV64, for both relocatable `-r` and final links.
Expected: Link ordinary GNU-as-generated RISC-V objects carrying standard psABI
`Tag_RISCV_x3_reg_usage` values where one object declares x3/gp as the global
pointer (value 1) and another declares x3 as a temporary register (value 3).
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