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import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ExprDefinitionInDylibTestCase(TestBase):
@skipIf(
compiler="clang",
compiler_version=["<", "22"],
bugnumber="Required Clang flag not supported",
)
@skipIfWindows
def test_with_structor_linkage_names(self):
"""
Tests that we can call functions whose definition
is in a different LLDB module than it's declaration.
"""
self.build(dictionary={"CXXFLAGS_EXTRAS": "-gstructor-decl-linkage-names"})
target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
self.assertTrue(target, VALID_TARGET)
env = self.registerSharedLibrariesWithTarget(target, ["lib"])
breakpoint = lldbutil.run_break_set_by_file_and_line(
self, "main.cpp", line_number("main.cpp", "return")
)
process = target.LaunchSimple(None, env, self.get_process_working_directory())
self.assertIsNotNone(
lldbutil.get_one_thread_stopped_at_breakpoint_id(self.process(), breakpoint)
)
self.expect_expr("f.method()", result_value="-72", result_type="int")
self.expect_expr("Foo(10)", result_type="Foo")
self.expect_expr("Base()", result_type="Base")
self.expect_expr("Bar()", result_type="Bar")
# Test a more complex setup: expression that has a three bases:
# 1. definition is in local module
# 2. definition is in different module
# 3. definition is in expression context (and has it's own virtual base)
self.expect_expr(
"struct ExprBase : virtual Foo { int z; ExprBase() : Foo(11) { z = x; } }; struct Expr : virtual Local, virtual Foo, virtual ExprBase { int w; Expr() : Local(), Foo(12), ExprBase() { w = y; } }; Expr tmp; tmp",
result_type="Expr",
result_children=[
ValueCheck(
name="Local",
children=[
ValueCheck(
name="Foo", children=[ValueCheck(name="x", value="12")]
),
ValueCheck(name="y", value="12"),
],
),
ValueCheck(name="Foo", children=[ValueCheck(name="x", value="12")]),
ValueCheck(
name="ExprBase",
children=[
ValueCheck(
name="Foo", children=[ValueCheck(name="x", value="12")]
),
ValueCheck(name="z", value="12"),
],
),
ValueCheck(name="w", value="12"),
],
)
@skipIfWindows
def test_no_structor_linkage_names(self):
"""
Tests that if structor declarations don't have linkage names, we can't
call ABI-tagged constructors. But non-tagged ones are fine.
"""
# In older versions of Clang the -gno-structor-decl-linkage-names
# behaviour was the default.
if self.expectedCompiler(["clang"]) and self.expectedCompilerVersion(
[">=", "22.0"]
):
self.build(
dictionary={"CXXFLAGS_EXTRAS": "-gno-structor-decl-linkage-names"}
)
else:
self.build()
target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
self.assertTrue(target, VALID_TARGET)
env = self.registerSharedLibrariesWithTarget(target, ["lib"])
breakpoint = lldbutil.run_break_set_by_file_and_line(
self, "main.cpp", line_number("main.cpp", "return")
)
process = target.LaunchSimple(None, env, self.get_process_working_directory())
self.assertIsNotNone(
lldbutil.get_one_thread_stopped_at_breakpoint_id(self.process(), breakpoint)
)
self.expect_expr("f.method()", result_value="-72", result_type="int")
self.expect_expr("Foo(10)", result_type="Foo")
self.expect("expr Base()", error=True)
self.expect("expr Bar()", error=True)
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