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Bug 487703 - Expansion of template template parameter pack

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Change-Id: I9000357454c05f755e8cb6894216a19d4ced2116
This commit is contained in:
Nathan Ridge 2016-02-19 18:26:23 -05:00
parent 8a39882870
commit bd887e6800
2 changed files with 32 additions and 0 deletions
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28
core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java
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@ -8041,6 +8041,34 @@ public class AST2TemplateTests extends AST2TestBase {
IVariable answer = helper.assertNonProblem("answer");
assertVariableValue(answer, 1);
}
// template <template <class> class ... Mixins>
// struct C : Mixins<int>... {};
//
// template <typename>
// struct SpecificMixin {};
//
// constexpr bool answer = __is_base_of(SpecificMixin<int>, C<SpecificMixin>);
public void testTemplateTemplateParameterPack_487703a() throws Exception {
BindingAssertionHelper helper = getAssertionHelper();
IVariable answer = helper.assertNonProblem("answer");
assertVariableValue(answer, 1);
}
// template <template <class> class ... Mixins>
// struct C : Mixins<C<Mixins...>>... {};
//
// template <typename>
// struct SpecificMixin {};
//
// typedef C<SpecificMixin> Waldo;
// constexpr bool answer = __is_base_of(SpecificMixin<Waldo>, Waldo);
public void testTemplateTemplateParameterPack_487703b() throws Exception {
BindingAssertionHelper helper = getAssertionHelper();
IVariable answer = helper.assertNonProblem("answer");
assertVariableValue(answer, 1);
}
// struct S {
// void kind();

4
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPTemplates.java
View file

@ -1202,6 +1202,10 @@ public class CPPTemplates {
int r= PACK_SIZE_NOT_FOUND;
if (binding instanceof ICPPDeferredClassInstance) {
ICPPDeferredClassInstance dcl= (ICPPDeferredClassInstance) binding;
if (dcl.getClassTemplate() instanceof ICPPTemplateTemplateParameter) {
r = combinePackSize(r, determinePackSize((ICPPTemplateParameter) dcl.getClassTemplate(),
tpMap));
}
ICPPTemplateArgument[] args = dcl.getTemplateArguments();
for (ICPPTemplateArgument arg : args) {
r= combinePackSize(r, determinePackSize(arg, tpMap));