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https://github.com/Gericom/teak-llvm.git
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aefcf5100a
Summary: With LLDB we use localUncachedLookup(), however, that fails to find Decls when a transparent context is involved and the given DC has external lexical storage. The solution is to use noload_lookup, which works well with transparent contexts. But, we cannot use only the noload_lookup since the slow case of localUncachedLookup is still needed in some other cases. These other cases are handled in ASTImporterLookupTable, but we cannot use that with LLDB since that traverses through the AST which initiates the load of external decls again via DC::decls(). We must avoid loading external decls during the import becuase ExternalASTSource is implemented with ASTImporter, so external loads during import results in uncontrolled and faulty import. Reviewers: shafik, teemperor, jingham, clayborg, a_sidorin, a.sidorin Subscribers: rnkovacs, dkrupp, Szelethus, gamesh411, cfe-commits, lldb-commits Tags: #clang, #lldb Differential Revision: https://reviews.llvm.org/D61333 llvm-svn: 366325
96 lines
3.0 KiB
Python
96 lines
3.0 KiB
Python
"""Test that importing modules in C works as expected."""
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from __future__ import print_function
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from distutils.version import StrictVersion
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import os
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import time
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import platform
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class CModulesTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@skipIfFreeBSD
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@expectedFailureAll(
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oslist=["linux"],
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bugnumber="http://llvm.org/pr23456 'fopen' has unknown return type")
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@expectedFailureAll(
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oslist=["windows"],
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bugnumber="llvm.org/pr24489: Name lookup not working correctly on Windows")
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@skipIf(macos_version=["<", "10.12"])
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@expectedFailureNetBSD
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def test_expr(self):
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self.build()
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Break inside the foo function which takes a bar_ptr argument.
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lldbutil.run_break_set_by_file_and_line(
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self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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# The stop reason of the thread should be breakpoint.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs=['stopped',
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'stop reason = breakpoint'])
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# The breakpoint should have a hit count of 1.
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self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
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substrs=[' resolved, hit count = 1'])
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# Enable logging of the imported AST.
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log_file = os.path.join(self.getBuildDir(), "lldb-ast-log.txt")
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self.runCmd("log enable lldb ast -f '%s'" % log_file)
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self.expect(
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"expr -l objc++ -- @import Darwin; 3",
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VARIABLES_DISPLAYED_CORRECTLY,
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substrs=[
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"int",
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"3"])
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# This expr command imports __sFILE with definition
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# (FILE is a typedef to __sFILE.)
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self.expect(
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"expr *fopen(\"/dev/zero\", \"w\")",
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VARIABLES_DISPLAYED_CORRECTLY,
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substrs=[
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"FILE",
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"_close"])
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# Check that the AST log contains exactly one definition of __sFILE.
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f = open(log_file)
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log_lines = f.readlines()
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f.close()
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os.remove(log_file)
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self.assertEqual(" ".join(log_lines).count("struct __sFILE definition"),
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1)
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self.expect("expr *myFile", VARIABLES_DISPLAYED_CORRECTLY,
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substrs=["a", "5", "b", "9"])
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self.expect(
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"expr MIN((uint64_t)2, (uint64_t)3)",
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VARIABLES_DISPLAYED_CORRECTLY,
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substrs=[
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"uint64_t",
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"2"])
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self.expect("expr stdin", VARIABLES_DISPLAYED_CORRECTLY,
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substrs=["(FILE *)", "0x"])
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line number to break inside main().
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self.line = line_number('main.c', '// Set breakpoint 0 here.')
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