tree.h (DECL_SOURCE_FILE): Improve documentation.

	* tree.h (DECL_SOURCE_FILE): Improve documentation.
	(DECL_SOURCE_LINE): Likewise.

	* decl.c (duplicate_decls): Update source position information
	when a template function is defined.

From-SVN: r42993

gcc/ChangeLog

+2001-06-07  Mark Mitchell  <mark@codesourcery.com>
+
+	* tree.h (DECL_SOURCE_FILE): Improve documentation.
+	(DECL_SOURCE_LINE): Likewise.
+
 2001-06-07  Loren J. Rittle  <ljrittle@acm.org>
 
 	* config/alpha/elf.h (MAKE_DECL_ONE_ONLY): Copy definition

gcc/cp/ChangeLog

+2001-06-07  Mark Mitchell  <mark@codesourcery.com>
+
+	* decl.c (duplicate_decls): Update source position information
+	when a template function is defined.
+
 2001-06-07  Phil Edwards  <pme@sources.redhat.com>
 
 	* lang-specs.h:  Move -D_GNU_SOURCE to config/linux.h.

gcc/cp/decl.c

@@ -3499,6 +3499,19 @@ duplicate_decls (newdecl, olddecl)
 	= chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl),
 		   DECL_TEMPLATE_SPECIALIZATIONS (newdecl));
 
+      /* If the new declaration is a definition, update the file and
+	 line information on the declaration.  */
+      if (DECL_INITIAL (DECL_RESULT (olddecl)) == NULL_TREE
+	  && DECL_INITIAL (DECL_RESULT (newdecl)) != NULL_TREE)
+	{
+	  DECL_SOURCE_LINE (olddecl) 
+	    = DECL_SOURCE_LINE (DECL_RESULT (olddecl))
+	    = DECL_SOURCE_LINE (newdecl);
+	  DECL_SOURCE_FILE (olddecl) 
+	    = DECL_SOURCE_FILE (DECL_RESULT (olddecl))
+	    = DECL_SOURCE_FILE (newdecl);
+	}
+
       return 1;
     }
 

gcc/tree.h

@@ -1347,7 +1347,10 @@ struct tree_type
 /* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which
    if nonzero, indicates that the field occupies the type.  */
 #define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->decl.initial)
-/* These two fields describe where in the source code the declaration was.  */
+/* These two fields describe where in the source code the declaration
+   was.  If the declaration appears in several places (as for a C
+   function that is declared first and then defined later), this
+   information should refer to the definition.  */
 #define DECL_SOURCE_FILE(NODE) (DECL_CHECK (NODE)->decl.filename)
 #define DECL_SOURCE_LINE(NODE) (DECL_CHECK (NODE)->decl.linenum)
 /* Holds the size of the datum, in bits, as a tree expression.