Clear the output string passed to GetHostName()

LLVM's wchar to UTF8 conversion routine expects an empty string to store the output.
GetHostName() on Windows is sometimes called with a non-empty string which triggers
an assert. The simple fix is to clear the output string before the conversion.

llvm-svn: 358550

1 files changed, 2 insertions, 0 deletions

diff --git a/lldb/source/Host/windows/HostInfoWindows.cpp b/lldb/source/Host/windows/HostInfoWindows.cpp
index 8cd8f2d2fc5..459703ff0ed 100644
--- a/lldb/source/Host/windows/HostInfoWindows.cpp
+++ b/lldb/source/Host/windows/HostInfoWindows.cpp
@@ -95,6 +95,8 @@ bool HostInfoWindows::GetHostname(std::string &s) {
   if (!::GetComputerNameW(buffer, &dwSize))
     return false;
 
+  // The conversion requires an empty string.
+  s.clear();
   return llvm::convertWideToUTF8(buffer, s);
 }