gcc-dg.exp: support more than one digit in relative line number notation

gcc/testsuite/ChangeLog:
	* gcc.dg/dg-test-1.c: Add tests of relative line specifications
	with more than one digit.
	* lib/gcc-dg.exp (process-message): Support more than one digit
	in relative line specifications.

From-SVN: r244024

gcc/testsuite/ChangeLog

+2017-01-03  David Malcolm  <dmalcolm@redhat.com>
+
+	* gcc.dg/dg-test-1.c: Add tests of relative line specifications
+	with more than one digit.
+	* lib/gcc-dg.exp (process-message): Support more than one digit
+	in relative line specifications.
+
 2017-01-03  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/78965

gcc/testsuite/gcc.dg/dg-test-1.c

@@ -16,3 +16,27 @@ void				/* { dg-warning "unused parameter 'f'" "warn2" { target *-*-* } .+1 } */
 bar (int e, int f, int g, int h)/* { dg-warning "unused parameter 'g'" "warn3" { target *-*-* } . } */
 {				/* { dg-warning "unused parameter 'h'" "warn4" { target *-*-* } .-1 } */
 }
+
+
+/* Ensure that relative line numbers with more than one digit are supported.  */
+/* { dg-warning "unused parameter 'i'" "warn5" { target *-*-* } .+10 } */
+
+
+
+
+
+
+
+
+void
+baz (int i, int j)
+{
+}
+
+
+
+
+
+
+
+/* { dg-warning "unused parameter 'j'" "warn6" { target *-*-* } .-10 } */

gcc/testsuite/lib/gcc-dg.exp

@@ -990,7 +990,7 @@ proc process-message { msgproc msgprefix dgargs } {
 
     # Handle relative line specification, .+1 or .-1 etc.
     if { [llength $dgargs] == 5
-	 && [regsub "^\.\[+-\](\[0-9\])$" [lindex $dgargs 4] "\\1" num] } {
+	 && [regsub "^\.\[+-\](\[0-9\]+)$" [lindex $dgargs 4] "\\1" num] } {
 	set num [expr [lindex $dgargs 0] [string index [lindex $dgargs 4] 1] $num]
 	set dgargs [lreplace $dgargs 4 4 $num]
     }