[fuzzer] Replace FuzzerExtFunctionsDlsymWin.cpp with FuzzerExtFunctionsWeakAlias.cpp

Summary:
Replace FuzzerExtFunctionsDlsymWin.cpp with FuzzerExtFunctionsWeakAlias.cpp
to get externally defined functions (eg: LLVMFuzzerInitialize,
LLVMFuzzerCustomMutator, etc) working again.

Also enable tests that depended on these functions (on windows)

Reviewers: rnk, morehouse

Reviewed By: rnk, morehouse

Subscribers: rnk, morehouse, mgorny

Differential Revision: https://reviews.llvm.org/D51700

llvm-svn: 342698

1 files changed, 0 insertions, 62 deletions

diff --git a/compiler-rt/lib/fuzzer/FuzzerExtFunctionsDlsymWin.cpp b/compiler-rt/lib/fuzzer/FuzzerExtFunctionsDlsymWin.cpp
deleted file mode 100644
index e09da3fdeee..00000000000
--- a/compiler-rt/lib/fuzzer/FuzzerExtFunctionsDlsymWin.cpp
+++ /dev/null
@@ -1,62 +0,0 @@
-//===- FuzzerExtFunctionsDlsymWin.cpp - Interface to external functions ---===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-// Implementation using dynamic loading for Windows.
-//===----------------------------------------------------------------------===//
-#include "FuzzerDefs.h"
-#if LIBFUZZER_WINDOWS
-
-#include "FuzzerExtFunctions.h"
-#include "FuzzerIO.h"
-#include <windows.h>
-
-// This must be included after Windows.h.
-#include <psapi.h>
-
-namespace fuzzer {
-
-ExternalFunctions::ExternalFunctions() {
-  HMODULE Modules[1024];
-  DWORD BytesNeeded;
-  HANDLE CurrentProcess = GetCurrentProcess();
-
-  if (!EnumProcessModules(CurrentProcess, Modules, sizeof(Modules),
-                          &BytesNeeded)) {
-    Printf("EnumProcessModules failed (error: %d).\n", GetLastError());
-    exit(1);
-  }
-
-  if (sizeof(Modules) < BytesNeeded) {
-    Printf("Error: the array is not big enough to hold all loaded modules.\n");
-    exit(1);
-  }
-
-  for (size_t i = 0; i < (BytesNeeded / sizeof(HMODULE)); i++)
-  {
-    FARPROC Fn;
-#define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
-    if (this->NAME == nullptr) {                                               \
-      Fn = GetProcAddress(Modules[i], #NAME);                                  \
-      if (Fn == nullptr)                                                       \
-         Fn = GetProcAddress(Modules[i], #NAME "__dll");                       \
-      this->NAME = (decltype(ExternalFunctions::NAME)) Fn;                     \
-    }
-#include "FuzzerExtFunctions.def"
-#undef EXT_FUNC
-  }
-
-#define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
-  if (this->NAME == nullptr && WARN)                                           \
-    Printf("WARNING: Failed to find function \"%s\".\n", #NAME);
-#include "FuzzerExtFunctions.def"
-#undef EXT_FUNC
-}
-
-} // namespace fuzzer
-
-#endif // LIBFUZZER_WINDOWS