cp-tree.h (class iloc_sentinel): New.

	* cp-tree.h (class iloc_sentinel): New.

We didn't already have a sentinel for input_location, and while
temp_override would work, it would also happily set input_location to 0,
which breaks things that try to look up the associated filename.

	* decl.c (grokdeclarator, finish_enum_value_list): Use it.
	* mangle.c (mangle_decl_string): Use it.
	* pt.c (perform_typedefs_access_check): Use it.

From-SVN: r276191

1 files changed, 18 insertions, 0 deletions

diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index 8fc3fc1..be1a44e 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -1762,6 +1762,24 @@ public:
   ~warning_sentinel() { flag = val; }
 };
 
+/* RAII sentinel to temporarily override input_location.  This will not set
+   input_location to UNKNOWN_LOCATION or BUILTINS_LOCATION.  */
+
+class iloc_sentinel
+{
+  location_t saved_loc;
+public:
+  iloc_sentinel (location_t loc): saved_loc (input_location)
+  {
+    if (loc >= RESERVED_LOCATION_COUNT)
+      input_location = loc;
+  }
+  ~iloc_sentinel ()
+  {
+    input_location = saved_loc;
+  }
+};
+
 /* RAII sentinel that saves the value of a variable, optionally
    overrides it right away, and restores its value when the sentinel
    id destructed.  */