https://bugs.llvm.org/show_bug.cgi?id=41168
Bug ID: 41168
Summary: -Wunused-template false positive on unnamed struct
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: da...@doublewise.net
CC: llvm-bugs@lists.llvm.org, neeil...@live.com,
richard-l...@metafoo.co.uk
The following code triggers -Wunused-template (note that the object is neither
static nor in the unnamed namespace, so the compiler cannot determine whether
it is used):
constexpr struct {
template<typename>
void f() {}
} warning;
The warning is fixed by naming the struct:
constexpr struct NoWarning {
template<typename>
void f() {}
} no_warning;
See it live: https://godbolt.org/z/_XmWs-
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