mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-22 21:15:40 -04:00
48b32f4ced
building method override tables for CXXMethodDecls in DWARFASTParserClang::CompleteTypeFromDWARF. C++ virtual method calls in LLDB expressions may fail if the override table for the method being called is not correct as IRGen will produce references to the wrong (or a missing) vtable entry. This patch does not fix calls to virtual methods with covariant return types as it mistakenly treats these as overloads, rather than overrides. This will be addressed in a future patch. Review: https://reviews.llvm.org/D41997 Partially fixes <rdar://problem/14205774> llvm-svn: 323163
48 lines
1.6 KiB
Python
48 lines
1.6 KiB
Python
"""
|
|
Test calling an overriden method.
|
|
|
|
Note:
|
|
This verifies that LLDB is correctly building the method overrides table.
|
|
If this table is not built correctly then calls to overridden methods in
|
|
derived classes may generate references to non-existant vtable entries,
|
|
as the compiler treats the overridden method as a totally new virtual
|
|
method definition.
|
|
<rdar://problem/14205774>
|
|
|
|
"""
|
|
|
|
import lldb
|
|
from lldbsuite.test.decorators import *
|
|
from lldbsuite.test.lldbtest import *
|
|
from lldbsuite.test import lldbutil
|
|
|
|
class ExprCommandCallOverriddenMethod(TestBase):
|
|
|
|
mydir = TestBase.compute_mydir(__file__)
|
|
|
|
def setUp(self):
|
|
# Call super's setUp().
|
|
TestBase.setUp(self)
|
|
# Find the line number to break for main.c.
|
|
self.line = line_number('main.cpp', '// Set breakpoint here')
|
|
|
|
def test(self):
|
|
"""Test calls to overridden methods in derived classes."""
|
|
self.build()
|
|
|
|
# Set breakpoint in main and run exe
|
|
self.runCmd("file a.out", CURRENT_EXECUTABLE_SET)
|
|
lldbutil.run_break_set_by_file_and_line(
|
|
self, "main.cpp", self.line, num_expected_locations=-1, loc_exact=True)
|
|
|
|
self.runCmd("run", RUN_SUCCEEDED)
|
|
|
|
# Test call to method in base class (this should always work as the base
|
|
# class method is never an override).
|
|
self.expect("expr b->foo()")
|
|
|
|
# Test call to overridden method in derived class (this will fail if the
|
|
# overrides table is not correctly set up, as Derived::foo will be assigned
|
|
# a vtable entry that does not exist in the compiled program).
|
|
self.expect("expr d.foo()")
|