Suppress undefined-template warnings when the pattern is declared in a system header.
The way to fix an undefined-template warning is to add lines to the header file that defines the template pattern. We should suppress the warnings when the template pattern is in a system header because we don't expect users to edit those.
llvm-svn: 321665
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index d8af8f3..eb0770a 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -3812,7 +3812,8 @@
PendingInstantiations.push_back(
std::make_pair(Function, PointOfInstantiation));
} else if (TSK == TSK_ImplicitInstantiation) {
- if (AtEndOfTU && !getDiagnostics().hasErrorOccurred()) {
+ if (AtEndOfTU && !getDiagnostics().hasErrorOccurred() &&
+ !getSourceManager().isInSystemHeader(PatternDecl->getLocStart())) {
Diag(PointOfInstantiation, diag::warn_func_template_missing)
<< Function;
Diag(PatternDecl->getLocation(), diag::note_forward_template_decl);
@@ -4347,7 +4348,8 @@
std::make_pair(Var, PointOfInstantiation));
} else if (TSK == TSK_ImplicitInstantiation) {
// Warn about missing definition at the end of translation unit.
- if (AtEndOfTU && !getDiagnostics().hasErrorOccurred()) {
+ if (AtEndOfTU && !getDiagnostics().hasErrorOccurred() &&
+ !getSourceManager().isInSystemHeader(PatternDecl->getLocStart())) {
Diag(PointOfInstantiation, diag::warn_var_template_missing)
<< Var;
Diag(PatternDecl->getLocation(), diag::note_forward_template_decl);