Introduce objc_nsstring_operation

This adds class objc_nsstring_operation, which implements
OP_OBJC_NSSTRING.

gdb/ChangeLog
2021-03-08  Tom Tromey  <tom@tromey.com>

	* eval.c: Include c-exp.h.
	* c-exp.h (class objc_nsstring_operation): New.

1 files changed, 1 insertions, 0 deletions

diff --git a/gdb/eval.c b/gdb/eval.c
index c667925..f1553da 100644
--- a/gdb/eval.c
+++ b/gdb/eval.c
@@ -41,6 +41,7 @@
 #include "typeprint.h"
 #include <ctype.h>
 #include "expop.h"
+#include "c-exp.h"
 
 /* Prototypes for local functions.  */