496970f6ee
"self" when those pointers are in registers. Previously in this case the IRInterpreter would handle them just as if the user had typed in "$rdi", which isn't safe because $rdi is passed in through the argument struct. Now we correctly break out all three cases (i.e., normal variables in registers, $reg, and this/self), and handle them in a way that's a little bit easier to read and change. This results in more accurate printing of "this" and "self" pointers all around. I have strengthened the optimized-code test case for Objective-C to ensure that we catch regressions in this area reliably in the future. <rdar://problem/12693963> llvm-svn: 169924
79 lines
2.5 KiB
Python
79 lines
2.5 KiB
Python
"""
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Test that objective-c expression parser continues to work for optimized build.
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http://llvm.org/viewvc/llvm-project?rev=126973&view=rev
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Fixed a bug in the expression parser where the 'this'
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or 'self' variable was not properly read if the compiler
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optimized it into a register.
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"""
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import os, time
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import unittest2
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import lldb
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from lldbtest import *
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import lldbutil
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import re
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# rdar://problem/9087739
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# test failure: objc_optimized does not work for "-C clang -A i386"
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@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
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class ObjcOptimizedTestCase(TestBase):
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mydir = os.path.join("lang", "objc", "objc-optimized")
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myclass = "MyClass"
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mymethod = "description"
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method_spec = "-[%s %s]" % (myclass, mymethod)
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@dsym_test
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def test_break_with_dsym(self):
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"""Test 'expr member' continues to work for optimized build."""
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self.buildDsym()
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self.objc_optimized()
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@dwarf_test
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def test_break_with_dwarf(self):
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"""Test 'expr member' continues to work for optimized build."""
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self.buildDwarf()
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self.objc_optimized()
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def objc_optimized(self):
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"""Test 'expr member' continues to work for optimized build."""
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_symbol (self, self.method_spec, num_expected_locations=1, sym_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ["stop reason = breakpoint"],
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patterns = ["frame.*0:.*%s %s" % (self.myclass, self.mymethod)])
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self.expect('expression member',
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startstr = "(int) $0 = 5")
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# <rdar://problem/12693963>
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interp = self.dbg.GetCommandInterpreter()
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result = lldb.SBCommandReturnObject()
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interp.HandleCommand('frame variable self', result)
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output = result.GetOutput()
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desired_pointer = "0x0"
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mo = re.search("0x[0-9a-f]+", output)
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if mo:
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desired_pointer = mo.group(0)
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self.expect('expression (self)',
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substrs = [("(%s *) $1 = " % self.myclass), desired_pointer])
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self.expect('expression self->non_member', error=True,
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substrs = ["does not have a member named 'non_member'"])
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if __name__ == '__main__':
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import atexit
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lldb.SBDebugger.Initialize()
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atexit.register(lambda: lldb.SBDebugger.Terminate())
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unittest2.main()
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