1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/input.c b/gcc/input.c
index 547c177..63cd062 100644
--- a/gcc/input.c
+++ b/gcc/input.c
@@ -698,7 +698,13 @@ location_get_source_line (expanded_location xloc,
   static char *buffer;
   static ssize_t len;
 
-  fcache * c = lookup_or_add_file_to_cache_tab (xloc.file);
+  if (xloc.line == 0)
+    return NULL;
+
+  fcache *c = lookup_or_add_file_to_cache_tab (xloc.file);
+  if (c == NULL)
+    return NULL;
+
   bool read = read_line_num (c, xloc.line, &buffer, &len);
 
   if (read && line_len)