Here we're crashing when substituting a non-dependent call to a
consteval operator, whose CALL_EXPR_OPERATOR_SYNTAX flag we try to
propagate to the result, but the result isn't a CALL_EXPR since the
selected function is consteval. This patch fixes this by checking the
result of extract_call_expr accordingly. (Note that we can't check
DECL_IMMEDIATE_FUNCTION_P here because we don't know which function was
selected by overload resolution from here.)
PR c++/105912
gcc/cp/ChangeLog:
* call.cc (extract_call_expr): Return a NULL_TREE on failure
instead of asserting.
* pt.cc (tsubst_copy_and_build) <case CALL_EXPR>: Guard against
NULL_TREE extract_call_expr result.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/consteval31.C: New test.
(cherry picked from commit
f70c18524221dcefa6cd26cee7b55503181bd912)
default:;
}
- gcc_assert (TREE_CODE (call) == CALL_EXPR
- || TREE_CODE (call) == AGGR_INIT_EXPR
- || call == error_mark_node);
+ if (TREE_CODE (call) != CALL_EXPR
+ && TREE_CODE (call) != AGGR_INIT_EXPR
+ && call != error_mark_node)
+ return NULL_TREE;
return call;
}
bool ord = CALL_EXPR_ORDERED_ARGS (t);
bool rev = CALL_EXPR_REVERSE_ARGS (t);
if (op || ord || rev)
- {
- function = extract_call_expr (ret);
- CALL_EXPR_OPERATOR_SYNTAX (function) = op;
- CALL_EXPR_ORDERED_ARGS (function) = ord;
- CALL_EXPR_REVERSE_ARGS (function) = rev;
- }
+ if (tree call = extract_call_expr (ret))
+ {
+ CALL_EXPR_OPERATOR_SYNTAX (call) = op;
+ CALL_EXPR_ORDERED_ARGS (call) = ord;
+ CALL_EXPR_REVERSE_ARGS (call) = rev;
+ }
}
RETURN (ret);
--- /dev/null
+// PR c++/105912
+// { dg-do compile { target c++20 } }
+
+struct A {
+ consteval A operator+() {
+ return {};
+ }
+};
+
+consteval A operator~(A) {
+ return {};
+}
+
+consteval A operator+(A, A) {
+ return {};
+}
+
+template<class>
+void f() {
+ A a;
+ ~a;
+ a + a;
+ +a;
+}
+
+template void f<int>();