diff -uprN gobject-introspection-1.38.0/giscanner/scannerlexer.l gobject-introspection-1.38.0.az/giscanner/scannerlexer.l
--- gobject-introspection-1.38.0/giscanner/scannerlexer.l	2013-07-10 18:13:23 +0200
+++ gobject-introspection-1.38.0.az/giscanner/scannerlexer.l	2014-03-11 16:37:17 +0200
@@ -248,7 +249,11 @@ parse_gtk_doc_comment (GISourceScanner *
   while (c2 != EOF && !(c1 == '*' && c2 == '/'))
     {
       if (!skip)
-        g_string_append_c (string, c1);
+        if (c1 == '\r' && c2 == '\n')
+          /* Skip Windows line-feeds */
+          ;
+        else
+          g_string_append_c (string, c1);
 
       if (c1 == '\n')
         lineno++;
diff -uprN gobject-introspection-1.38.0/giscanner/sourcescanner.py gobject-introspection-1.38.0.az/giscanner/sourcescanner.py
--- gobject-introspection-1.38.0/giscanner/sourcescanner.py	2013-07-10 18:13:23 +0200
+++ gobject-introspection-1.38.0.az/giscanner/sourcescanner.py	2014-03-11 16:37:17 +0200
@@ -291,9 +291,13 @@ class SourceScanner(object):
         cpp_args += ['-E', '-C', '-I.', '-']
         cpp_args += self._cpp_options
 
+        # XXX: Use gcc's output switch instead of STDOUT, else Shell interaction
+        #      can cause mangling of line-endings (MINGW32/MSYS).
+        tmp_name = tempfile.mktemp()
+        cpp_args += ['-o', tmp_name]
+
         proc = subprocess.Popen(cpp_args,
-                                stdin=subprocess.PIPE,
-                                stdout=subprocess.PIPE)
+                                stdin=subprocess.PIPE)
 
         for define in defines:
             proc.stdin.write('#ifndef %s\n' % (define, ))
@@ -302,22 +309,12 @@ class SourceScanner(object):
             proc.stdin.write('#include <%s>\n' % (filename, ))
         proc.stdin.close()
 
-        tmp_fd, tmp_name = tempfile.mkstemp()
-        fp = os.fdopen(tmp_fd, 'w+b')
-        while True:
-            data = proc.stdout.read(4096)
-            if data is None:
-                break
-            fp.write(data)
-            if len(data) < 4096:
-                break
-        fp.seek(0, 0)
-
         assert proc, 'Proc was none'
         proc.wait()
         if proc.returncode != 0:
             raise SystemExit('Error while processing the source.')
 
+        fp = open(tmp_name, 'r+b')
         self._scanner.parse_file(fp.fileno())
         fp.close()
         os.unlink(tmp_name)
diff -uprN gobject-introspection-1.38.0/scannerlexer.c gobject-introspection-1.38.0.az/scannerlexer.c
--- gobject-introspection-1.38.0/scannerlexer.c	2013-09-24 15:42:57 +0200
+++ gobject-introspection-1.38.0.az/scannerlexer.c	2014-03-11 16:37:17 +0200
@@ -2840,7 +2840,11 @@ parse_gtk_doc_comment (GISourceScanner *
   while (c2 != EOF && !(c1 == '*' && c2 == '/'))
     {
       if (!skip)
-        g_string_append_c (string, c1);
+        if (c1 == '\r' && c2 == '\n')
+          /* Skip Windows line-feeds */
+          ;
+        else
+          g_string_append_c (string, c1);
 
       if (c1 == '\n')
         lineno++;