================
@@ -4870,14 +4870,16 @@ def note_ovl_candidate_inconsistent_deduction_types :
Note<
"candidate template ignored: deduced values %diff{"
"of conflicting types for parameter %0 (%1 of type $ vs. %3 of type $)|"
"%1 and %3 of conflicting types for parameter %0}2,4">;
-def note_ovl_candidate_explicit_arg_mismatch_named : Note<
+def note_ovl_candidate_explicit_arg_mismatch : Note<
"candidate template ignored: invalid explicitly-specified argument "
- "for template parameter %0">;
+ "for %ordinal0 template parameter">;
+def note_ovl_candidate_explicit_arg_mismatch_detail : Note<
+ "%select{"
+ "|: expected a type, but got value '%1'"
+ "|: expected constant of type %3 but got type %1"
----------------
AidanGoldfarb wrote:
Updated the diags. I am not thrilled about
```
// FIXME: This is a hack. We should emit a better message
// for ill-formed const exprs in >=C++20.
if (qt.getCanonicalType() ==
SecondArg.getAsType().getCanonicalType() &&
__cplusplus <= 201703)
```
but I couldn't find another way to avoid the case. Would be resolved in a
future PR, along with better messages for `TemplateTemplateParmDecl` cases.
https://github.com/llvm/llvm-project/pull/122754
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