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| author | Tomohiro Kashiwada <kikairoya@gmail.com> | 2025-09-09 19:10:28 +0900 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-09-09 13:10:28 +0300 |
| commit | e976622e2d7464b09fcf0141291003bf5fe9fd6f (patch) | |
| tree | d283c833eb33ca239cc9541c7f7411ce35d079d3 /llvm/lib/Transforms/Utils/LoopUtils.cpp | |
| parent | a0b8d548fd250c92c8f9274b57e38ad3f0b215e9 (diff) | |
| download | llvm-e976622e2d7464b09fcf0141291003bf5fe9fd6f.zip llvm-e976622e2d7464b09fcf0141291003bf5fe9fd6f.tar.gz llvm-e976622e2d7464b09fcf0141291003bf5fe9fd6f.tar.bz2 | |
[LLD][COFF] Prevent to emit relocations for discarded weak wrapped symbols (#156214)
When a symbol is imported from a DLL, a base relocation record is
normally emitted.
However, if the import is pulled in via a wrapped symbol (using
`--wrap`) and later dropped because it is only referenced weakly, a
dangling base relocation remains in the output.
At runtime, this relocation changes the symbol value from null to a
garbage pointer.
This patch adds checks to avoid emitting relocation records for
non-`Defined` symbols, and to prevent creating an auto-import entry if
an import entry for the wrapped symbol already exists.
Fixes https://github.com/llvm/llvm-project/issues/150739
Diffstat (limited to 'llvm/lib/Transforms/Utils/LoopUtils.cpp')
0 files changed, 0 insertions, 0 deletions