[PATCH] gdb/testsuite: ISO C++17 does not allow register storage class specifier.

[Mark Wielaard <mark@klomp.org>]

g++ enables -Wregister when defaulting to C++17. Disable it for those
tests that explicitly use register.

gdb/testsuite/ChangeLog:

	* gdb.cp/classes.exp (prepare_for_testing): Add
	additional_flags=-Wno-register.
	* gdb.cp/inherit.exp (prepare_for_testing): Likewise.
	* gdb.cp/misc.exp (prepare_for_testing): Likewise.
---
 gdb/testsuite/ChangeLog          | 7 +++++++
 gdb/testsuite/gdb.cp/classes.exp | 2 +-
 gdb/testsuite/gdb.cp/inherit.exp | 2 +-
 gdb/testsuite/gdb.cp/misc.exp    | 2 +-
 4 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 7976dd76306..c55c9a71415 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2020-08-22  Mark Wielaard  <mark@klomp.org>
+
+	* gdb.cp/classes.exp (prepare_for_testing): Add
+	additional_flags=-Wno-register.
+	* gdb.cp/inherit.exp (prepare_for_testing): Likewise.
+	* gdb.cp/misc.exp (prepare_for_testing): Likewise.
+
 2020-08-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>
 
 	* gdb.base/print-file-var.exp: Fix typo "breapoint".
diff --git a/gdb/testsuite/gdb.cp/classes.exp b/gdb/testsuite/gdb.cp/classes.exp
index 4a2287a8704..89e64c47cf9 100644
--- a/gdb/testsuite/gdb.cp/classes.exp
+++ b/gdb/testsuite/gdb.cp/classes.exp
@@ -25,7 +25,7 @@ load_lib "cp-support.exp"
 standard_testfile .cc
 
 if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
-	 {debug c++ additional_flags=-Wno-deprecated-register}]} {
+	{debug c++ additional_flags=-Wno-deprecated-register additional_flags=-Wno-register}]} {
     return -1
 }
 
diff --git a/gdb/testsuite/gdb.cp/inherit.exp b/gdb/testsuite/gdb.cp/inherit.exp
index 2d4635c96ad..677d9ee5476 100644
--- a/gdb/testsuite/gdb.cp/inherit.exp
+++ b/gdb/testsuite/gdb.cp/inherit.exp
@@ -27,7 +27,7 @@ load_lib "cp-support.exp"
 standard_testfile misc.cc
 
 if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
-	 {debug c++ additional_flags=-Wno-deprecated-register}]} {
+	{debug c++ additional_flags=-Wno-deprecated-register additional_flags=-Wno-register}]} {
     return -1
 }
 
diff --git a/gdb/testsuite/gdb.cp/misc.exp b/gdb/testsuite/gdb.cp/misc.exp
index 61034bf8088..94acbd0b493 100644
--- a/gdb/testsuite/gdb.cp/misc.exp
+++ b/gdb/testsuite/gdb.cp/misc.exp
@@ -20,7 +20,7 @@ if { [skip_cplus_tests] } { continue }
 standard_testfile .cc
 
 if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
-	 {debug c++ additional_flags=-Wno-deprecated-register}]} {
+	{debug c++ additional_flags=-Wno-deprecated-register additional_flags=-Wno-register}]} {
     return -1
 }
 
-- 
2.18.4