gcc testsuite changes for new linker messages

GNU ld error messages have changed to comply with the GNU coding
standards.

	* lib/prune.exp (prune_gcc_output): Match lower case "in function"
	GNU ld message.
	* g++.dg/other/anon5.C: Match lower case "bad value" GNU ld message.

From-SVN: r258054

gcc/testsuite/ChangeLog

+2018-02-28  Alan Modra  <amodra@gmail.com>
+
+	* lib/prune.exp (prune_gcc_output): Match lower case "in function"
+	GNU ld message.
+	* g++.dg/other/anon5.C: Match lower case "bad value" GNU ld message.
+
 2018-02-27  Martin Sebor  <msebor@redhat.com>
 
 	PR c++/83871

gcc/testsuite/g++.dg/other/anon5.C

@@ -4,7 +4,7 @@
 // Ignore additional message on powerpc-ibm-aix
 // { dg-prune-output "obtain more information" } */
 // Ignore additional messages on Linux/x86 with PIE
-// { dg-prune-output "Bad value" } */
+// { dg-prune-output "\[Bb\]ad value" } */
 
 namespace {
   struct c

gcc/testsuite/lib/prune.exp

@@ -31,7 +31,7 @@ proc prune_gcc_output { text } {
     # Handle any freeform regexps.
     set text [handle-dg-regexps $text]
 
-    regsub -all "(^|\n)(\[^\n\]*: )?In ((static member |lambda )?function|member|method|(copy )?constructor|destructor|instantiation|substitution|program|subroutine|block-data)\[^\n\]*" $text "" text
+    regsub -all "(^|\n)(\[^\n\]*: \[iI\]|I)n ((static member |lambda )?function|member|method|(copy )?constructor|destructor|instantiation|substitution|program|subroutine|block-data)\[^\n\]*" $text "" text
     regsub -all "(^|\n)\[^\n\]*(: )?At (top level|global scope):\[^\n\]*" $text "" text
     regsub -all "(^|\n)\[^\n\]*:   (recursively )?required \[^\n\]*" $text "" text
     regsub -all "(^|\n)\[^\n\]*:   . skipping \[0-9\]* instantiation contexts \[^\n\]*" $text "" text