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"""
Test that LLDB doesn't crash if the std module we load is empty.
"""
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
import os
class ImportStdModule(TestBase):
# We only emulate a fake libc++ in this test and don't use the real libc++,
# but we still add the libc++ category so that this test is only run in
# test configurations where libc++ is actually supposed to be tested.
@add_test_categories(["libc++"])
@skipIfRemote
@skipIf(compiler=no_match("clang"))
def test(self):
self.build()
sysroot = os.path.join(os.getcwd(), "root")
# Set the sysroot.
self.runCmd(
"platform select --sysroot '" + sysroot + "' host", CURRENT_EXECUTABLE_SET
)
lldbutil.run_to_source_breakpoint(
self, "// Set break point at this line.", lldb.SBFileSpec("main.cpp")
)
self.runCmd("settings set target.import-std-module true")
# Use the typedef that is only defined in our 'empty' module. If this fails, then LLDB
# somehow figured out the correct define for the header and compiled the right
# standard module that actually contains the std::vector template.
self.expect("expr MissingContent var = 3; var", substrs=["$0 = 3"])
# Try to access our mock std::vector. This should fail but not crash LLDB as the
# std::vector template should be missing from the std module.
self.expect(
"expr (size_t)v.size()", substrs=["Couldn't look up symbols"], error=True
)
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