commit a914ec1d89c3d3f39e91bd8fb2f17d6c61785515
author Martin Storsjö <martin@martin.st> Mon Oct 28 10:11:05 2019 +0200
committer Martin Storsjö <martin@martin.st> Thu Oct 31 09:34:39 2019 +0200
tree 6a8ed9ec64a87a7d71a844919d0c68c49ba813cb
parent 2a4f136cb540c3f28d1f98dcd24dd311c686090e

[libunwind] [Windows] Add a log message if EnumProcessModules fails

Differential Revision: https://reviews.llvm.org/D69504

Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 08c7ff99e13890ed19b864e7ebfea7167eb83842

src/AddressSpace.hpp

diff --git a/src/AddressSpace.hpp b/src/AddressSpace.hpp
index 908c898..db67df4 100644
--- a/src/AddressSpace.hpp
+++ b/src/AddressSpace.hpp
@@ -433,8 +433,12 @@
   HANDLE process = GetCurrentProcess();
   DWORD needed;
 
-  if (!EnumProcessModules(process, mods, sizeof(mods), &needed))
+  if (!EnumProcessModules(process, mods, sizeof(mods), &needed)) {
+    DWORD err = GetLastError();
+    _LIBUNWIND_TRACE_UNWINDING("findUnwindSections: EnumProcessModules failed, "
+                               "returned error %d", (int)err);
     return false;
+  }
 
   for (unsigned i = 0; i < (needed / sizeof(HMODULE)); i++) {
     PIMAGE_DOS_HEADER pidh = (PIMAGE_DOS_HEADER)mods[i];