See http://lists.x.org/archives/xorg-devel/2015-February/045755.html

diff --git a/hw/xfree86/parser/Files.c b/hw/xfree86/parser/Files.c
index 849bf92..5cc3ec7 100644
--- a/hw/xfree86/parser/Files.c
+++ b/hw/xfree86/parser/Files.c
@@ -76,14 +76,18 @@ static xf86ConfigSymTabRec FilesTab[] = {
 #define CLEANUP xf86freeFiles
 
 XF86ConfFilesPtr
-xf86parseFilesSection(void)
+xf86parseFilesSection(XF86ConfFilesPtr ptr)
 {
     int i, j;
     int k, l;
     char *str;
     int token;
 
-    parsePrologue(XF86ConfFilesPtr, XF86ConfFilesRec)
+    if (!ptr) {
+	if( (ptr=calloc(1,sizeof(XF86ConfFilesRec))) == NULL ) {
+		return NULL;
+	}
+    }
 
         while ((token = xf86getToken(FilesTab)) != ENDSECTION) {
         switch (token) {
diff --git a/hw/xfree86/parser/configProcs.h b/hw/xfree86/parser/configProcs.h
index 171f8e8..e8199fe 100644
--- a/hw/xfree86/parser/configProcs.h
+++ b/hw/xfree86/parser/configProcs.h
@@ -36,7 +36,7 @@ void xf86freeDeviceList(XF86ConfDevicePtr ptr);
 int xf86validateDevice(XF86ConfigPtr p);
 
 /* Files.c */
-XF86ConfFilesPtr xf86parseFilesSection(void);
+XF86ConfFilesPtr xf86parseFilesSection(XF86ConfFilesPtr ptr);
 void xf86printFileSection(FILE * cf, XF86ConfFilesPtr ptr);
 void xf86freeFiles(XF86ConfFilesPtr p);
 
diff --git a/hw/xfree86/parser/read.c b/hw/xfree86/parser/read.c
index 327c02a..e0d6139 100644
--- a/hw/xfree86/parser/read.c
+++ b/hw/xfree86/parser/read.c
@@ -110,7 +110,7 @@ xf86readConfigFile(void)
             if (xf86nameCompare(xf86_lex_val.str, "files") == 0) {
                 free(xf86_lex_val.str);
                 xf86_lex_val.str = NULL;
-                HANDLE_RETURN(conf_files, xf86parseFilesSection());
+                HANDLE_RETURN(conf_files, xf86parseFilesSection(ptr->conf_files));
             }
             else if (xf86nameCompare(xf86_lex_val.str, "serverflags") == 0) {
                 free(xf86_lex_val.str);