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c++filt: support COFF import thunks

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The synthetic thunk for the import is prefixed with __imp_.  Attempt to
undecorate the names when they begin with the __imp_ prefix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298550 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool 2017-03-22 21:15:19 +00:00
parent 5db3fb7fb6
commit 0010ede8d5
2 changed files with 11 additions and 0 deletions
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5
test/tools/llvm-cxxfilt/coff-import.test Normal file
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@ -0,0 +1,5 @@
RUN: llvm-cxxfilt -_ ___imp__ZSt6futureIvE | FileCheck %s
RUN: llvm-cxxfilt __imp__ZSt6futureIvE | FileCheck %s
CHECK: import thunk for std::future<void>

6
tools/llvm-cxxfilt/llvm-cxxfilt.cpp
View File

@ -68,6 +68,12 @@ static void demangle(llvm::raw_ostream &OS, const std::string &Mangled) {
(DecoratedLength >= 4 && strncmp(Decorated, "___Z", 4) == 0)))
Undecorated = itaniumDemangle(Decorated, nullptr, nullptr, &Status);
if (!Undecorated &&
(DecoratedLength > 6 && strncmp(Decorated, "__imp_", 6) == 0)) {
OS << "import thunk for ";
Undecorated = itaniumDemangle(Decorated + 6, nullptr, nullptr, &Status);
}
OS << (Undecorated ? Undecorated : Mangled) << '\n';
free(Undecorated);