commit e2aa04fdef84652492f7cd11ce9f4d971dd7a3c3
author Ben Boeckel <ben.boeckel@kitware.com> Wed Oct 03 09:31:02 2018 -0400
committer Ben Boeckel <mathstuf@gmail.com> Fri Nov 09 10:51:17 2018 -0500
tree 68124996c851014fc430b14ee7f7ccac6055422b
parent 6a9411e784c58492e62a5dcb7d5d1aadfb2e1830

Win32Fatal: support a "hint" for the error

The callsite might have extra context which is helpful for interpreting
the error message.

src/util.cc

diff --git a/src/util.cc b/src/util.cc
index 760bc23..8e67fd9 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -432,8 +432,12 @@
   return msg;
 }
 
-void Win32Fatal(const char* function) {
-  Fatal("%s: %s", function, GetLastErrorString().c_str());
+void Win32Fatal(const char* function, const char* hint) {
+  if (hint) {
+    Fatal("%s: %s (%s)", function, GetLastErrorString().c_str(), hint);
+  } else {
+    Fatal("%s: %s", function, GetLastErrorString().c_str());
+  }
 }
 #endif
 

src/util.h

diff --git a/src/util.h b/src/util.h
index 1b4227c..6a4a7a9 100644
--- a/src/util.h
+++ b/src/util.h
@@ -119,7 +119,7 @@
 string GetLastErrorString();
 
 /// Calls Fatal() with a function name and GetLastErrorString.
-NORETURN void Win32Fatal(const char* function);
+NORETURN void Win32Fatal(const char* function, const char* hint = NULL);
 #endif
 
 #endif  // NINJA_UTIL_H_