Bugpoint was not correctly capturing stderr! This caused it to "find" bugs
that didn't exist, missing the ones that do :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12978 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/SystemUtils.cpp b/lib/Support/SystemUtils.cpp
index dafbf98..a39c5ab 100644
--- a/lib/Support/SystemUtils.cpp
+++ b/lib/Support/SystemUtils.cpp
@@ -142,7 +142,10 @@
case 0: // Child
RedirectFD(StdInFile, 0); // Redirect file descriptors...
RedirectFD(StdOutFile, 1);
- RedirectFD(StdErrFile, 2);
+ if (StdOutFile != StdErrFile)
+ RedirectFD(StdErrFile, 2);
+ else
+ dup2(1, 2);
execv(ProgramPath.c_str(), (char *const *)Args);
std::cerr << "Error executing program: '" << ProgramPath;