https://sourceware.org/bugzilla/show_bug.cgi?id=32818
Bug ID: 32818
Summary: Linker uses wrong PLT sequence with memory-seal flag
Product: binutils
Version: 2.44
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: ykhrustalev at sourceware dot org
Target Milestone: ---
When linking objects with BTI marking, static linker correctly produces output
binary marking, however if the `-z memory-seal` flag is used, it chooses wrong
PLT sequence (without BTI).
Steps to reproduce:
1. Compile any object with "-mbranch-protection=bti".
2. Link it into a DSO with "-z memory-seal".
3. Check BTI marking in the produced share library with "readelf -n".
4. Check disassembly of the ".plt" sequence: BTI instruction won't be there.
5. Link without "-z memory-seal": see that ".plt" sequence contains BTI
instruction as expected.
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