Enable assertion output and --disable-assert for configure.

[bison.git] / src / location.c

diff --git a/src/location.c b/src/location.c
index 57adf1882073fef954f01f14e554c9a4406f9f7c..e287aee73b45c900204b601ecab570cdc29ce692 100644 (file)
--- a/src/location.c
+++ b/src/location.c
@@ -1,5 +1,6 @@
 /* Locations for Bison
-   Copyright (C) 2002, 2005, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
+   Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -97,22 +98,44 @@ location_compute (location *loc, boundary *cur, char const *token, size_t size)
 
 /* Output to OUT the location LOC.
    Warning: it uses quotearg's slot 3.  */
-void
+unsigned
 location_print (FILE *out, location loc)
 {
-  int end_col = 0 < loc.end.column ? loc.end.column - 1 : 0;
-  fprintf (out, "%s:%d.%d",
-          quotearg_n_style (3, escape_quoting_style, loc.start.file),
-          loc.start.line, loc.start.column);
-
+  unsigned res = 0;
+  int end_col = 0 != loc.end.column ? loc.end.column - 1 : 0;
+  res += fprintf (out, "%s",
+                  quotearg_n_style (3, escape_quoting_style, loc.start.file));
+  if (0 <= loc.start.line)
+    {
+      res += fprintf(out, ":%d", loc.start.line);
+      if (0 <= loc.start.column)
+        res += fprintf (out, ".%d", loc.start.column);
+    }
   if (loc.start.file != loc.end.file)
-    fprintf (out, "-%s:%d.%d",
-            quotearg_n_style (3, escape_quoting_style, loc.end.file),
-            loc.end.line, end_col);
-  else if (loc.start.line < loc.end.line)
-    fprintf (out, "-%d.%d", loc.end.line, end_col);
-  else if (loc.start.column < end_col)
-    fprintf (out, "-%d", end_col);
+    {
+      res += fprintf (out, "-%s",
+                      quotearg_n_style (3, escape_quoting_style,
+                                        loc.end.file));
+      if (0 <= loc.end.line)
+        {
+          res += fprintf(out, ":%d", loc.end.line);
+          if (0 <= end_col)
+            res += fprintf (out, ".%d", end_col);
+        }
+    }
+  else if (0 <= loc.end.line)
+    {
+      if (loc.start.line < loc.end.line)
+        {
+          res += fprintf (out, "-%d", loc.end.line);
+          if (0 <= end_col)
+            res += fprintf (out, ".%d", end_col);
+        }
+      else if (0 <= end_col && loc.start.column < end_col)
+        res += fprintf (out, "-%d", end_col);
+    }
+
+  return res;
 }
 
 void