===================================================================
@@ -0,0 +1,11 @@
+// PR c++/50454
+// { dg-do compile { target int128 } }
+
+template<typename T>
+ struct limits;
+
+template<>
+ struct limits<__int128> { }; // { dg-error "does not support" }
+
+template<>
+ struct limits<unsigned __int128> { }; // { dg-error "does not support" }
===================================================================
@@ -0,0 +1,4 @@
+// PR c++/50454
+// { dg-do compile { target int128 } }
+
+#include "int128-2.h"
===================================================================
@@ -0,0 +1,10 @@
+#pragma GCC system_header
+
+template<typename T>
+ struct limits;
+
+template<>
+ struct limits<__int128> { };
+
+template<>
+ struct limits<unsigned __int128> { };
===================================================================
@@ -8640,6 +8640,15 @@ grokdeclarator (const cp_declarator *declarator,
ctype = NULL_TREE;
+ if (explicit_int128)
+ {
+ if (int128_integer_type_node == NULL_TREE)
+ error ("%<__int128%> is not supported by this target");
+ else if (pedantic && ! in_system_header)
+ pedwarn (input_location, OPT_pedantic,
+ "ISO C++ does not support %<__int128%> for %qs", name);
+ }
+
/* Now process the modifiers that were specified
and check for invalid combinations. */
@@ -8695,22 +8704,6 @@ grokdeclarator (const cp_declarator *declarator,
if (flag_pedantic_errors)
ok = 0;
}
- if (explicit_int128)
- {
- if (int128_integer_type_node == NULL_TREE)
- {
- error ("%<__int128%> is not supported by this target");
- ok = 0;
- }
- else if (pedantic)
- {
- pedwarn (input_location, OPT_pedantic,
- "ISO C++ does not support %<__int128%> for %qs",
- name);
- if (flag_pedantic_errors)
- ok = 0;
- }
- }
}
/* Discard the type modifiers if they are invalid. */