[PATCH] Listing cpp source code in mainless binaries

[Luis Machado <luisgpm@linux.vnet.ibm.com>]

An annoying situation occurs when trying to display CPP source code with
the list command when we use a binary that does not have a main
function.

When selecting a random source file to display, GDB only skips header
files, not the "<<C++-namespaces>>" symtab entry for, i believe, global
namespaces. Thus, GDB won't list the source code (below). This small
patch fixes this.


(gdb) l
1       <<C++-namespaces>>: No such file or directory.
        in <<C++-namespaces>>

Regards,
Luis


2008-10-06  Luis Machado  <luisgpm@br.ibm.com>

	* source.c (select_source_symtab): Make sure we skip namespace
	symtabs when showing cpp source code.

Index: gdb/source.c
===================================================================
--- gdb.orig/source.c	2008-05-19 08:50:10.000000000 -0700
+++ gdb/source.c	2008-06-10 11:15:01.000000000 -0700
@@ -250,7 +250,8 @@
 	return;
     }
 
-  /* All right; find the last file in the symtab list (ignoring .h's).  */
+  /* All right; find the last file in the symtab list (ignoring .h's)
+     and namespace symtabs.  */
 
   current_source_line = 1;
 
@@ -260,7 +261,8 @@
 	{
 	  const char *name = s->filename;
 	  int len = strlen (name);
-	  if (!(len > 2 && strcmp(&name[len - 2], ".h") == 0))
+	  if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
+	      || strcmp (name, "<<C++-namespaces>>") == 0)))
 	    current_source_symtab = s;
 	}
     }