================
@@ -640,3 +640,36 @@ namespace PR46637 {
template<typename T> struct Y { T x; };
Y<auto() -> auto> y; // expected-error {{'auto' not allowed in template
argument}}
}
+
+namespace GH71015 {
+
+// Check that there is no error in case a templated function is recursive and
+// has a placeholder return type.
+struct Node {
+ int value;
+ Node* left;
+ Node* right;
+};
+
+bool parse(const char*);
+Node* parsePrimaryExpr();
+
+auto parseMulExpr(auto node) { // cxx14-error {{'auto' not allowed in function
prototype}}
+ if (node == nullptr) node = parsePrimaryExpr();
+ if (!parse("*")) return node;
+ return parseMulExpr(new Node{.left = node, .right = parsePrimaryExpr()});
----------------
zygoloid wrote:
It would be great to add a test that this is rejected without the previous line
`retuen node;`
https://github.com/llvm/llvm-project/pull/75456
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