From 335703b147746c6f46b3583d14d987643dc6f8dc Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Fri, 15 Apr 2016 15:56:51 +1000
Subject: [PATCH] debug: cache win32 error code before logging

the code beneath LOG_WARNING and friends is opaque, and may accidentally
replace the value of GetLastError before we have a chance to render it.
---
 debug_win32.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/debug_win32.cpp b/debug_win32.cpp
index 7afbd6a9..6a93a8d5 100644
--- a/debug_win32.cpp
+++ b/debug_win32.cpp
@@ -47,7 +47,8 @@ void
 prepare_debugger (void)
 {
     if (nullptr == LoadLibrary("exchndl.dll")) {
-        LOG_WARNING("Emergency debugger not loaded: %s", util::win32_error::code_string ());
+        auto code = GetLastError ();
+        LOG_WARNING("Emergency debugger not loaded: %s", util::win32_error::code_string (code));
     }
 }