From 64935e99b7f22fb761b90b9e57b6aab3c348830f Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 20 Nov 2017 18:49:54 +0200
Subject: Handle case when compiler-reported header does not exist

This, for example, happens when compiling under wine with file wlantypes.h
included as WlanTypes.h.
---
 build2/cc/compile.cxx | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

(limited to 'build2/cc/compile.cxx')

diff --git a/build2/cc/compile.cxx b/build2/cc/compile.cxx
index 49ff453..6022fb6 100644
--- a/build2/cc/compile.cxx
+++ b/build2/cc/compile.cxx
@@ -2172,7 +2172,22 @@ namespace build2
           //
           if (!cache)
           {
-            f.realize ();
+            // While we can reasonably expect this path to exit, things do
+            // go south from time to time (like compiling under wine with
+            // file wlantypes.h included as WlanTypes.h).
+            //
+            try
+            {
+              f.realize ();
+            }
+            catch (const invalid_path&)
+            {
+              fail << "invalid header path '" << f << "'";
+            }
+            catch (const system_error& e)
+            {
+              fail << "invalid header path '" << f << "': " << e;
+            }
 
             if (!so_map.empty ())
             {
-- 
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