[clang-repl] Additional test for disambiguation of templates

[Hahnfeld]

Summary

This test case was fixed in commit rG2c4620c1 ("Consider the scope spec in template lookups for deduction guides."), but it is worth having a dedicated test case with a templated struct and a using declaration.

[v.g.vassilev]

Thanks, @Hahnfeld!

[v.g.vassilev]

If you have not merged this patch please consider my comment.

clang/test/Interpreter/namespace-template-disambiguate.cpp

7 ↗

(On Diff #548481)

It might be a good idea to add this test to disambiguate-decl-stmt.cpp where we track these things.

[Hahnfeld]

clang/test/Interpreter/namespace-template-disambiguate.cpp

7 ↗

(On Diff #548481)

done

clang/test/Interpreter/disambiguate-decl-stmt.cpp

 // RUN: %clang_cc1 -fsyntax-only -verify -fincremental-extensions -std=c++20 %s
 // RUN: %clang_cc1 -fsyntax-only -DMS -fms-extensions -verify -fincremental-extensions -std=c++20 %s
 
 // expected-no-diagnostics
 
 extern "C" int printf(const char*,...);
 
 // Decls which are hard to disambiguate
 
 // Templates
 namespace ns1 { template<typename T> void tmplt(T &) {}}
 int arg_tmplt = 12; ns1::tmplt(arg_tmplt);
 
+namespace ns2 { template <typename T> struct S {}; }
+namespace ns3 { struct A { public: using S = int; }; }
+namespace ns3 { A::S f(A::S a); }
+
 // ParseStatementOrDeclaration returns multiple statements.
 #ifdef MS
 int g_bFlag = 1;
 __if_exists(::g_bFlag) {
   printf("Entering __if_exists\n");
   printf("g_bFlag = %d\n", g_bFlag);
 }
 #endif // MS