[all-commits] [llvm/llvm-project] 965c3d: [lld][WebAssembly] Fix SEGFAULT when importing wra...

[Lukas Döllerer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 965c3d760de35753d97d41c6b69582cecff8819d
      https://github.com/llvm/llvm-project/commit/965c3d760de35753d97d41c6b69582cecff8819d
  Author: Lukas Döllerer <contact at lukas-doellerer.de>
  Date:   2025-11-27 (Thu, 27 Nov 2025)

  Changed paths:
    A lld/test/wasm/wrap_import.s
    M lld/wasm/Driver.cpp
    M lld/wasm/SyntheticSections.cpp

  Log Message:
  -----------
  [lld][WebAssembly] Fix SEGFAULT when importing wrapped symbol (#169656)

When wrapping a symbol `foo` via `-wrap=foo`, we create the symbol
`__wrap_foo` that replaces all mentions of `foo`. This feature was
implemented for wasm-ld in commit a5ca34e.

So far, no valid signature has been attached to the undefined symbol,
leading to a nullptr dereference in the logic for creating the import
section. This change adds the correct signature to the wrapped symbol,
enabling the generation of an import for it.



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