jingham created this revision.
jingham added a reviewer: labath.
Herald added subscribers: lldb-commits, jdoerfert.
Herald added a project: LLDB.
The "uint32_t *versions, uint32_t num_versions" wrapper makes a list with the
number of elements that SBModule::GetVersion said it returns, but if one of
those elements is UINT32_MAX it aborts filling the list. If you then iterate
over that returned list in Python, you will get a crash. This patch will fill
all the elements GetVersion said it had.
This comes up if you have a library with a version 0.0.0. That returns the (to
me) not very sensical result of 2 elements, the first of which is UINT32_MAX.
This patch is just to handle the crash that that result causes in Python. I
asked on lldb-dev why GetVersion does this - maybe there is some good reason I
don't know. But anyway, I want to treat that as a separate issue.
Repository:
rLLDB LLDB
https://reviews.llvm.org/D59913
Files:
packages/Python/lldbsuite/test/macosx/version_zero/Makefile
packages/Python/lldbsuite/test/macosx/version_zero/TestGetVersionZeroVersion.py
packages/Python/lldbsuite/test/macosx/version_zero/dylib.c
packages/Python/lldbsuite/test/macosx/version_zero/main.c
scripts/Python/python-typemaps.swig
Index: scripts/Python/python-typemaps.swig
===================================================================
--- scripts/Python/python-typemaps.swig
+++ scripts/Python/python-typemaps.swig
@@ -333,18 +333,13 @@
PyObject* list = PyList_New(count);
for (uint32_t j = 0; j < count; j++)
{
- if ($1[j] < UINT32_MAX)
+ PyObject* item = PyInt_FromLong($1[j]);
+ int ok = PyList_SetItem(list,j,item);
+ if (ok != 0)
{
- PyObject* item = PyInt_FromLong($1[j]);
- int ok = PyList_SetItem(list,j,item);
- if (ok != 0)
- {
- $result = Py_None;
- break;
- }
- }
- else
+ $result = Py_None;
break;
+ }
}
$result = list;
}
Index: packages/Python/lldbsuite/test/macosx/version_zero/main.c
===================================================================
--- packages/Python/lldbsuite/test/macosx/version_zero/main.c
+++ packages/Python/lldbsuite/test/macosx/version_zero/main.c
@@ -0,0 +1,7 @@
+extern int func();
+
+int
+main()
+{
+ return func();
+}
Index: packages/Python/lldbsuite/test/macosx/version_zero/dylib.c
===================================================================
--- packages/Python/lldbsuite/test/macosx/version_zero/dylib.c
+++ packages/Python/lldbsuite/test/macosx/version_zero/dylib.c
@@ -0,0 +1,4 @@
+int
+func() {
+ return 5;
+}
Index: packages/Python/lldbsuite/test/macosx/version_zero/TestGetVersionZeroVersion.py
===================================================================
--- packages/Python/lldbsuite/test/macosx/version_zero/TestGetVersionZeroVersion.py
+++ packages/Python/lldbsuite/test/macosx/version_zero/TestGetVersionZeroVersion.py
@@ -0,0 +1,49 @@
+"""
+Read in a library with a version number of 0.0.0, make sure we produce a good version.
+"""
+
+from __future__ import print_function
+
+
+import os
+import time
+import re
+import lldb
+from lldbsuite.test import decorators
+import lldbsuite.test.lldbutil as lldbutil
+from lldbsuite.test.lldbtest import *
+
+
+class TestGetVersionForZero(TestBase):
+
+ mydir = TestBase.compute_mydir(__file__)
+
+ # If your test case doesn't stress debug info, the
+ # set this to true. That way it won't be run once for
+ # each debug info format.
+ NO_DEBUG_INFO_TESTCASE = True
+
+ @decorators.skipUnlessDarwin
+ def test_get_version_zero(self):
+ """Read in a library with a version of 0.0.0. Test SBModule::GetVersion"""
+ self.build()
+ self.main_source_file = lldb.SBFileSpec("dylib.c")
+ self.do_test()
+
+ def setUp(self):
+ # Call super's setUp().
+ TestBase.setUp(self)
+
+ def do_test(self):
+ lib_name = "libDylib.dylib"
+ target = lldbutil.run_to_breakpoint_make_target(self, exe_name=lib_name)
+ module = target.FindModule(lldb.SBFileSpec(lib_name))
+ self.assertTrue(module.IsValid(), "Didn't find the libDylib.dylib module")
+ # For now the actual version numbers are wrong for a library of 0.0.0
+ # but the previous code would crash iterating over the resultant
+ # list. So we are testing that that doesn't happen.
+ did_iterate = False
+ for elem in module.GetVersion():
+ did_iterate = True
+ self.assertTrue(did_iterate, "Didn't get into the GetVersion loop")
+
Index: packages/Python/lldbsuite/test/macosx/version_zero/Makefile
===================================================================
--- packages/Python/lldbsuite/test/macosx/version_zero/Makefile
+++ packages/Python/lldbsuite/test/macosx/version_zero/Makefile
@@ -0,0 +1,21 @@
+LEVEL = ../../make
+
+include $(LEVEL)/Makefile.rules
+
+LIB_PREFIX := lib
+LD_FLAGS := -dynamiclib -current_version 0.0.0 -install_name @executable_path/libDylib.dylib
+
+all: libDylib.dylib
+
+a.out: main.o libDylib.dylib
+ $(CC) $(CFLAGS) -o a.out main.o -L. libDylib.dylib
+
+main.o: $(SRCDIR)/main.c
+ $(CC) $(CFLAGS) -c $(SRCDIR)/main.c
+
+libDylib.dylib: dylib.o
+ $(CC) $(CFLAGS) $(LD_FLAGS) -o libDylib.dylib dylib.o
+
+dylib.o : dylib.c
+ $(CC) $(CFLAGS) -c $(SRCDIR)/dylib.c
+
\ No newline at end of file
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