[testsuite patch] Fix false FAIL in gdb.cp/casts.exp

[Jan Kratochvil <jan.kratochvil@redhat.com>]

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Hi,

gcc-6.2.1-1.fc26.x86_64

gdb compile failed, /home/jkratoch/redhat/gdb-clean/gdb/testsuite/gdb.cp/casts.cc:40:10: error: expected primary-expression before 'int'
 decltype(int x)
          ^~~
/home/jkratoch/redhat/gdb-clean/gdb/testsuite/gdb.cp/casts.cc:40:10: error: expected ')' before 'int'
/home/jkratoch/redhat/gdb-clean/gdb/testsuite/gdb.cp/casts.cc:40:1: error: expected unqualified-id before 'decltype'
 decltype(int x)
 ^~~~~~~~
/home/jkratoch/redhat/gdb-clean/gdb/testsuite/gdb.cp/casts.cc: In function 'int main(int, char**)':
/home/jkratoch/redhat/gdb-clean/gdb/testsuite/gdb.cp/casts.cc:59:14: error: expected primary-expression before 'decltype'
   double y = decltype(2);
              ^~~~~~~~

'decltype' is a registered keyword since C++11 which is now a default for GCC.

OK for check-in?


Jan

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gdb/testsuite/ChangeLog
2016-09-11  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* gdb.cp/casts.cc: Rename decltype to int_to_double.
	* gdb.cp/casts.exp (whatis decltype(5)): Rename to ...
	(whatis int_to_double(5)): ... here.

diff --git a/gdb/testsuite/gdb.cp/casts.cc b/gdb/testsuite/gdb.cp/casts.cc
index 43f112f..4f68ba0 100644
--- a/gdb/testsuite/gdb.cp/casts.cc
+++ b/gdb/testsuite/gdb.cp/casts.cc
@@ -37,7 +37,7 @@ struct DoublyDerived : public VirtuallyDerived,
 // Confuse a simpler approach.
 
 double
-decltype(int x)
+int_to_double(int x)
 {
   return x + 2.0;
 }
@@ -56,7 +56,7 @@ main (int argc, char **argv)
   Alpha *ad = &derived;
   Alpha *add = &doublyderived;
 
-  double y = decltype(2);
+  double y = int_to_double(2);
 
   return 0;  /* breakpoint spot: casts.exp: 1 */
 }
diff --git a/gdb/testsuite/gdb.cp/casts.exp b/gdb/testsuite/gdb.cp/casts.exp
index 34a2492..5798098 100644
--- a/gdb/testsuite/gdb.cp/casts.exp
+++ b/gdb/testsuite/gdb.cp/casts.exp
@@ -112,7 +112,7 @@ gdb_test "print reinterpret_cast<A &> (*b)" " = \\(A \\&\\) @$hex: {a = 42}" \
 
 # Test that keyword shadowing works.
 
-gdb_test "whatis decltype(5)" " = double"
+gdb_test "whatis int_to_double(5)" " = double"
 
 # Basic tests using typeof.