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Suppress unused warning on static inline function template specializations.

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Patch by Halfdan Ingvarsson!

llvm-svn: 179598
This commit is contained in:
Rafael Espindola 2013-04-16 15:21:30 +00:00
parent f6edda8c30
commit 3c4a251ce8
2 changed files with 25 additions and 1 deletions
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5
clang/lib/Sema/SemaDecl.cpp
View File

@ -1219,7 +1219,10 @@ bool Sema::ShouldWarnIfUnusedFileScopedDecl(const DeclaratorDecl *D) const {
return false;
} else {
// 'static inline' functions are used in headers; don't warn.
if (FD->getStorageClass() == SC_Static &&
// Make sure we get the storage class from the canonical declaration,
// since otherwise we will get spurious warnings on specialized
// static template functions.
if (FD->getCanonicalDecl()->getStorageClass() == SC_Static &&
FD->isInlineSpecified())
return false;
}

21
clang/test/SemaCXX/warn-unused-filescoped.cpp
View File

@ -133,6 +133,27 @@ namespace test6 {
};
}
namespace test7
{
template<typename T>
static inline void foo(T) { }
// This should not emit an unused-function warning since it inherits
// the static storage type from the base template.
template<>
inline void foo(int) { }
// Partial specialization
template<typename T, typename U>
static inline void bar(T, U) { }
template<typename U>
inline void bar(int, U) { }
template<>
inline void bar(int, int) { }
};
namespace pr14776 {
namespace {
struct X {};