shafik created this revision.
shafik added reviewers: aprantl, jingham, teemperor, martong.
Herald added a subscriber: rnkovacs.
Herald added a reviewer: serge-sans-paille.
When we are creating a ClassTemplateSpecializationDecl in
ParseTypeFromDWARF(...) we are not handling the case where variadic pack is
empty in the specialization. This patch handles that case and adds a test to
prevent future regressions.
https://reviews.llvm.org/D57363
Files:
packages/Python/lldbsuite/test/expression_command/radar_47565290/Makefile
packages/Python/lldbsuite/test/expression_command/radar_47565290/TestClassTemplateSpecializationParametersHandling.py
packages/Python/lldbsuite/test/expression_command/radar_47565290/main.cpp
source/Symbol/ClangASTContext.cpp
Index: source/Symbol/ClangASTContext.cpp
===================================================================
--- source/Symbol/ClangASTContext.cpp
+++ source/Symbol/ClangASTContext.cpp
@@ -1549,25 +1549,31 @@
}
}
- if (template_param_infos.packed_args &&
- template_param_infos.packed_args->args.size()) {
+ if (template_param_infos.packed_args) {
IdentifierInfo *identifier_info = nullptr;
if (template_param_infos.pack_name && template_param_infos.pack_name[0])
identifier_info = &ast->Idents.get(template_param_infos.pack_name);
const bool parameter_pack_true = true;
- if (IsValueParam(template_param_infos.packed_args->args[0])) {
- template_param_decls.push_back(NonTypeTemplateParmDecl::Create(
- *ast, decl_context,
- SourceLocation(), SourceLocation(), depth, num_template_params,
- identifier_info,
- template_param_infos.packed_args->args[0].getIntegralType(),
- parameter_pack_true, nullptr));
- } else {
+
+ if (template_param_infos.packed_args->args.size()) {
+
+ if (IsValueParam(template_param_infos.packed_args->args[0])) {
+ template_param_decls.push_back(NonTypeTemplateParmDecl::Create(
+ *ast, decl_context, SourceLocation(), SourceLocation(), depth,
+ num_template_params, identifier_info,
+ template_param_infos.packed_args->args[0].getIntegralType(),
+ parameter_pack_true, nullptr));
+ } else {
+ template_param_decls.push_back(TemplateTypeParmDecl::Create(
+ *ast, decl_context, SourceLocation(), SourceLocation(), depth,
+ num_template_params, identifier_info, is_typename,
+ parameter_pack_true));
+ }
+ } else if (identifier_info) {
template_param_decls.push_back(TemplateTypeParmDecl::Create(
- *ast, decl_context,
- SourceLocation(), SourceLocation(), depth, num_template_params,
- identifier_info,
- is_typename, parameter_pack_true));
+ *ast, decl_context, SourceLocation(), SourceLocation(), depth,
+ num_template_params, identifier_info, is_typename,
+ parameter_pack_true));
}
}
clang::Expr *const requires_clause = nullptr; // TODO: Concepts
Index: packages/Python/lldbsuite/test/expression_command/radar_47565290/main.cpp
===================================================================
--- /dev/null
+++ packages/Python/lldbsuite/test/expression_command/radar_47565290/main.cpp
@@ -0,0 +1,26 @@
+template <typename N, typename P, class... O>
+class A {
+
+};
+
+class BB;
+
+template <>
+class A<BB,int> {
+
+};
+
+class Value{};
+
+class BB final : public Value,
+ public A<BB, int> {
+public:
+ int foo() { return 1;}
+};
+
+
+int main() {
+ BB b;
+
+ return b.foo() - 1; // break here
+}
Index: packages/Python/lldbsuite/test/expression_command/radar_47565290/TestClassTemplateSpecializationParametersHandling.py
===================================================================
--- /dev/null
+++ packages/Python/lldbsuite/test/expression_command/radar_47565290/TestClassTemplateSpecializationParametersHandling.py
@@ -0,0 +1,26 @@
+"""
+Test Expression Parser code gen for ClassTemplateSpecializationDecl. This is a fix for rdar://problem/47564499
+"""
+
+from __future__ import print_function
+
+
+import os
+import time
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestClassTemplateSpecializationParametersHandling(TestBase):
+
+ mydir = TestBase.compute_mydir(__file__)
+
+ def test_with_run_command(self):
+ """Test that that file and class static variables display correctly."""
+ self.build()
+
+ (self.target, self.process, _, bkpt) = lldbutil.run_to_source_breakpoint(self, '// break here',
+ lldb.SBFileSpec("main.cpp", False))
+
+ self.expect("expr -u 0 -- b.foo()", substrs=['$0 = 1'])
Index: packages/Python/lldbsuite/test/expression_command/radar_47565290/Makefile
===================================================================
--- /dev/null
+++ packages/Python/lldbsuite/test/expression_command/radar_47565290/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../make
+
+CXX_SOURCES := main.cpp
+
+include $(LEVEL)/Makefile.rules
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