a377cdd23d
This patch adds support for template arguments of `clang::TemplateArgument::ArgKind::StructuralValue` kind (added in https://github.com/llvm/llvm-project/pull/78041). These are used for non-type template parameters such as floating point constants. When LLDB created `clang::NonTypeTemplateParmDecl`s, it previously assumed integral values, this patch accounts for structural values too. Anywhere LLDB assumed a `DW_TAG_template_value_parameter` was `Integral`, it will now also check for `StructuralValue`, and will unpack the `TemplateArgument` value and type accordingly. We can rely on the fact that any `TemplateArgument` of `StructuralValue` kind that the `DWARFASTParserClang` creates will have a valid value, because it gets those from `DW_AT_const_value`.
106 lines
4.8 KiB
Python
106 lines
4.8 KiB
Python
import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class TestCase(TestBase):
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@no_debug_info_test
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@skipIf(compiler="clang", compiler_version=["<", "20.0"])
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def test(self):
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self.build()
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target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
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value = self.expect_expr("temp1", result_type="C<int, 2>")
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template_type = value.GetType()
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self.assertEqual(template_type.GetNumberOfTemplateArguments(), 2)
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# Check a type argument.
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self.assertEqual(
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template_type.GetTemplateArgumentKind(0), lldb.eTemplateArgumentKindType
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)
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self.assertEqual(template_type.GetTemplateArgumentType(0).GetName(), "int")
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# Check a integral argument.
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self.assertEqual(
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template_type.GetTemplateArgumentKind(1), lldb.eTemplateArgumentKindIntegral
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)
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self.assertEqual(
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template_type.GetTemplateArgumentType(1).GetName(), "unsigned int"
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)
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# Template parameter isn't a NTTP.
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self.assertFalse(template_type.GetTemplateArgumentValue(target, 0))
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# Template parameter index out-of-bounds.
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self.assertFalse(template_type.GetTemplateArgumentValue(target, 2))
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# Template parameter is a NTTP.
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param_val = template_type.GetTemplateArgumentValue(target, 1)
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self.assertEqual(param_val.GetTypeName(), "unsigned int")
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self.assertEqual(param_val.GetValueAsUnsigned(), 2)
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# Try to get an invalid template argument.
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self.assertEqual(
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template_type.GetTemplateArgumentKind(2), lldb.eTemplateArgumentKindNull
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)
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self.assertEqual(template_type.GetTemplateArgumentType(2).GetName(), "")
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value = self.expect_expr("temp2", result_type="Foo<short, -2>")
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# Can't get template parameter value with invalid target.
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self.assertFalse(value.GetType().GetTemplateArgumentValue(lldb.SBTarget(), 1))
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template_param_value = value.GetType().GetTemplateArgumentValue(target, 1)
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self.assertTrue(template_param_value)
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self.assertEqual(template_param_value.GetTypeName(), "short")
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self.assertEqual(template_param_value.GetValueAsSigned(), -2)
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value = self.expect_expr("temp3", result_type="Foo<char, 'v'>")
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template_param_value = value.GetType().GetTemplateArgumentValue(target, 1)
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self.assertTrue(template_param_value)
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self.assertEqual(template_param_value.GetTypeName(), "char")
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self.assertEqual(chr(template_param_value.GetValueAsSigned()), "v")
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value = self.expect_expr("temp4", result_type="Foo<float, 2.000000e+00>")
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template_param_value = value.GetType().GetTemplateArgumentValue(target, 1)
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self.assertEqual(template_param_value.GetTypeName(), "float")
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# FIXME: this should return a float
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self.assertEqual(template_param_value.GetValueAsSigned(), 2)
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value = self.expect_expr("temp5", result_type="Foo<double, -2.505000e+02>")
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template_param_value = value.GetType().GetTemplateArgumentValue(target, 1)
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self.assertEqual(template_param_value.GetTypeName(), "double")
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# FIXME: this should return a float
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self.assertEqual(template_param_value.GetValueAsSigned(), -250)
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# FIXME: type should be Foo<int *, &temp1.member>
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value = self.expect_expr("temp6", result_type="Foo<int *, int *>")
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self.assertFalse(value.GetType().GetTemplateArgumentValue(target, 1))
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# FIXME: support wider range of floating point types
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value = self.expect_expr("temp7", result_type="Foo<__fp16, __fp16>")
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self.assertFalse(value.GetType().GetTemplateArgumentValue(target, 1))
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value = self.expect_expr("temp8", result_type="Foo<__fp16, __fp16>")
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self.assertFalse(value.GetType().GetTemplateArgumentValue(target, 1))
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value = self.expect_expr("temp9", result_type="Bar<double, 1.200000e+00>")
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template_param_value = value.GetType().GetTemplateArgumentValue(target, 1)
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self.assertEqual(template_param_value.GetTypeName(), "double")
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# FIXME: this should return a float
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self.assertEqual(template_param_value.GetValueAsSigned(), 1)
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value = self.expect_expr(
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"temp10", result_type="Bar<float, 1.000000e+00, 2.000000e+00>"
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)
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template_param_value = value.GetType().GetTemplateArgumentValue(target, 1)
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self.assertEqual(template_param_value.GetTypeName(), "float")
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# FIXME: this should return a float
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self.assertEqual(template_param_value.GetValueAsSigned(), 1)
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template_param_value = value.GetType().GetTemplateArgumentValue(target, 2)
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self.assertEqual(template_param_value.GetTypeName(), "float")
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# FIXME: this should return a float
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self.assertEqual(template_param_value.GetValueAsSigned(), 2)
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