2007-10-24  Wu Zhou  <woodzltc@cn.ibm.com>
	    Carlos Eduardo Seo  <cseo@linux.vnet.ibm.com>

	* dwarf2read.c (read_partial_die): check the value
	of DW_AT_calling_convention in Fortran programs.

Index: src/gdb/dwarf2read.c
===================================================================
--- src.orig/gdb/dwarf2read.c
+++ src/gdb/dwarf2read.c
@@ -5616,6 +5616,13 @@ read_partial_die (struct partial_die_inf
         case DW_AT_byte_size:
           part_die->has_byte_size = 1;
           break;
+	case DW_AT_calling_convention:
+	  /* DWARF standard suggests to use value DW_CC_program of attribute
+	   DW_AT_calling_convention to indicate the Fortran main program.
+	   The following code is to check this.  */
+	  if (DW_UNSND (&attr) == DW_CC_program)
+	    set_main_name (part_die->name);
+	  break;
 	default:
 	  break;
 	}