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"""Test that lldb works correctly on compile units form different languages."""
import re
import lldb
from lldbsuite.test.lldbtest import *
class MixedLanguagesTestCase(TestBase):
def test_language_of_frame(self):
"""Test that the language defaults to the language of the current frame."""
self.build()
exe = self.getBuildArtifact("a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Execute the cleanup function during test case tear down
# to restore the frame format.
def cleanup():
self.runCmd(
"settings set frame-format %s" % self.format_string, check=False
)
self.addTearDownHook(cleanup)
self.runCmd("settings show frame-format")
m = re.match('^frame-format \(format-string\) = "(.*)"$', self.res.GetOutput())
self.assertTrue(m, "Bad settings string")
self.format_string = m.group(1)
# Change the default format to print the language.
format_string = "frame #${frame.index}: ${frame.pc}{ ${module.file.basename}\`${function.name}{${function.pc-offset}}}{, lang=${language}}\n"
self.runCmd("settings set frame-format %s" % format_string)
self.expect(
"settings show frame-format",
SETTING_MSG("frame-format"),
substrs=[format_string],
)
# Run to BP at main (in main.c) and test that the language is C.
self.runCmd("breakpoint set -n main")
self.runCmd("run")
self.expect("thread backtrace", substrs=["`main", "lang=c"])
# Make sure evaluation of C++11 fails.
self.expect("expr foo != nullptr", error=True, startstr="error")
# Run to BP at foo (in foo.cpp) and test that the language is C++.
self.runCmd("breakpoint set -n foo")
self.runCmd("continue")
self.expect("thread backtrace", substrs=["`::foo()", "lang=c++"])
# Make sure we can evaluate an expression requiring C++11
# (note: C++11 is enabled by default for C++).
self.expect("expr foo != nullptr", patterns=["true"])
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