Conversation
… parameters The AutoType's deduced-as-dependent mechanism is not really used for constant template parameters, but this is currently harmless to ignore because when dealing which such types, they will have been transformed, turning them back to plain undeduced AutoTypes. This should be NFC for current main users, but #141776 will depend on this.
Member
|
@llvm/pr-subscribers-clang Author: Matheus Izvekov (mizvekov) ChangesThe AutoType's deduced-as-dependent mechanism is not really used for constant template parameters, but this is currently harmless to ignore because when dealing which such types, they will have been transformed, turning them back to plain undeduced AutoTypes. This should be NFC for current main users, but #141776 will depend on this. Full diff: https://github.com/llvm/llvm-project/pull/161099.diff 1 Files Affected:
diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
index 3ebbb30ae483e..2bf1511c5cfa0 100644
--- a/clang/lib/Sema/SemaTemplate.cpp
+++ b/clang/lib/Sema/SemaTemplate.cpp
@@ -7102,7 +7102,7 @@ ExprResult Sema::CheckTemplateArgument(NamedDecl *Param, QualType ParamType,
// If the parameter type somehow involves auto, deduce the type now.
DeducedType *DeducedT = ParamType->getContainedDeducedType();
- bool IsDeduced = DeducedT && !DeducedT->isDeduced();
+ bool IsDeduced = DeducedT && DeducedT->getDeducedType().isNull();
if (IsDeduced) {
// When checking a deduced template argument, deduce from its type even if
// the type is dependent, in order to check the types of non-type template
|
cor3ntin
approved these changes
Sep 29, 2025
Contributor
cor3ntin
left a comment
There was a problem hiding this comment.
Impressingly/confusingly, this does solve our issues. Thanks for the quick fix
mahesh-attarde
pushed a commit
to mahesh-attarde/llvm-project
that referenced
this pull request
Oct 3, 2025
… parameters (llvm#161099) The AutoType's deduced-as-dependent mechanism is not really used for constant template parameters, but this is currently harmless to ignore because when dealing which such types, they will have been transformed, turning them back to plain undeduced AutoTypes. This should be NFC for current main users, but llvm#141776 will depend on this.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The AutoType's deduced-as-dependent mechanism is not really used for constant template parameters, but this is currently harmless to ignore because when dealing which such types, they will have been transformed, turning them back to plain undeduced AutoTypes.
This should be NFC for current main users, but #141776 will depend on this.