[all-commits] [llvm/llvm-project] 7288b8: [ELF] --wrap: don't copy exportDynamic

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7288b85cc80f1ce5509aeea860e6b4232cd3ca01
      https://github.com/llvm/llvm-project/commit/7288b85cc80f1ce5509aeea860e6b4232cd3ca01
  Author: Fangrui Song <i at maskray.me>
  Date:   2022-02-05 (Sat, 05 Feb 2022)

  Changed paths:
    M lld/ELF/SymbolTable.cpp
    M lld/test/ELF/wrap-no-real.s
    M lld/test/ELF/wrap-shlib-undefined.s

  Log Message:
  -----------
  [ELF] --wrap: don't copy exportDynamic

For -no-pie/-pie, when `__real_foo` is interposable in a shared object, `foo` is
exported. This rule does not match GNU ld and is unneeded because:

* the exported `foo` does not interpose `__real_foo` at run-time
* the similar `__wrap_foo` <-> `foo` relation does not have the rule