Hans Wennborg 066eea75d3 Revert "Reland "clang][DebugInfo] Emit global variable definitions for static data members with constant initializers (#70639)""
This casued asserts:

  llvm/lib/IR/Metadata.cpp:689:
  void llvm::MDNode::resolve(): Assertion `isUniqued() && "Expected this to be uniqued"' failed.

See comments on the PR.

This also reverts the dependent follow-up commits, see below.

> When an LLDB user asks for the value of a static data member, LLDB
> starts by searching the Names accelerator table for the corresponding
> variable definition DIE. For static data members with out-of-class
> definitions that works fine, because those get represented as global
> variables with a location and making them eligible to be added to the
> Names table. However, in-class definitions won<E2><80><99>t get indexed because
> we usually don't emit global variables for them. So in DWARF we end
> up with a single `DW_TAG_member` that usually holds the constant
> initializer.  But we don't get a corresponding CU-level
> `DW_TAG_variable` like we do for out-of-class definitions.
>
> To make it more convenient for debuggers to get to the value of
> inline static data members, this patch makes sure we emit definitions
> for static variables with constant initializers the same way we do
> for other static variables. This also aligns Clang closer to GCC,
> which produces CU-level definitions for inline statics and also
> emits these into `.debug_pubnames`.
>
> The implementation keeps track of newly created static data members.
> Then in `CGDebugInfo::finalize`, we emit a global `DW_TAG_variable`
> with a `DW_AT_const_value` for any of those declarations that didn't
> end up with a definition in the `DeclCache`.
>
> The newly emitted `DW_TAG_variable` will look as follows:
> ```
> 0x0000007b:   DW_TAG_structure_type
>                 DW_AT_calling_convention        (DW_CC_pass_by_value)
>                 DW_AT_name      ("Foo")
>                 ...
>
> 0x0000008d:     DW_TAG_member
>                   DW_AT_name    ("i")
>                   DW_AT_type    (0x00000062 "const int")
>                   DW_AT_external        (true)
>                   DW_AT_declaration     (true)
>                   DW_AT_const_value     (4)
>
> Newly added
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
>
> 0x0000009a:   DW_TAG_variable
>                 DW_AT_specification     (0x0000008d "i")
>                 DW_AT_const_value       (4)
>                 DW_AT_linkage_name      ("_ZN2t2IiE1iIfEE")
> ```
>
> This patch also drops the `DW_AT_const_value` off of the declaration
> since we now always have it on the definition. This ensures that the
> `DWARFParallelLinker` can type-merge class with static members where
> we couldn't attach the constant on the declaration in some CUs.

This reverts commit 7c3707aea8a6f1fc245ad2862982b8a51b6c0fea.
This reverts commit cab0a19467ac2e6e1e022087f4b6cb90d55da040.
This reverts commit 317481b3c8b34b0c3f106c514e6aa39b70886110.
This reverts commit 15fc809404d4715822e5349b76dcca50eb100eec.
This reverts commit 470de2bbec7f5fdd199775aa99c68ac76f4d5c74.
2023-11-07 15:52:19 +01:00

661 lines
27 KiB
Python

"""
Test lldb-dap setBreakpoints request
"""
import os
import lldbdap_testcase
import dap_server
from lldbsuite.test import lldbutil
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
def make_buffer_verify_dict(start_idx, count, offset=0):
verify_dict = {}
for i in range(start_idx, start_idx + count):
verify_dict["[%i]" % (i)] = {"type": "int", "value": str(i + offset)}
return verify_dict
class TestDAP_variables(lldbdap_testcase.DAPTestCaseBase):
def verify_values(self, verify_dict, actual, varref_dict=None, expression=None):
if "equals" in verify_dict:
verify = verify_dict["equals"]
for key in verify:
verify_value = verify[key]
actual_value = actual[key]
self.assertEqual(
verify_value,
actual_value,
'"%s" keys don\'t match (%s != %s) from:\n%s'
% (key, actual_value, verify_value, actual),
)
if "startswith" in verify_dict:
verify = verify_dict["startswith"]
for key in verify:
verify_value = verify[key]
actual_value = actual[key]
startswith = actual_value.startswith(verify_value)
self.assertTrue(
startswith,
('"%s" value "%s" doesn\'t start with' ' "%s")')
% (key, actual_value, verify_value),
)
if "contains" in verify_dict:
verify = verify_dict["contains"]
for key in verify:
contains_array = verify[key]
actual_value = actual[key]
self.assertTrue(isinstance(contains_array, list))
for verify_value in contains_array:
self.assertIn(verify_value, actual_value)
if "missing" in verify_dict:
missing = verify_dict["missing"]
for key in missing:
self.assertTrue(
key not in actual, 'key "%s" is not expected in %s' % (key, actual)
)
hasVariablesReference = "variablesReference" in actual
varRef = None
if hasVariablesReference:
# Remember variable references in case we want to test further
# by using the evaluate name.
varRef = actual["variablesReference"]
if varRef != 0 and varref_dict is not None:
if expression is None:
evaluateName = actual["evaluateName"]
else:
evaluateName = expression
varref_dict[evaluateName] = varRef
if (
"hasVariablesReference" in verify_dict
and verify_dict["hasVariablesReference"]
):
self.assertTrue(hasVariablesReference, "verify variable reference")
if "children" in verify_dict:
self.assertTrue(
hasVariablesReference and varRef is not None and varRef != 0,
("children verify values specified for " "variable without children"),
)
response = self.dap_server.request_variables(varRef)
self.verify_variables(
verify_dict["children"], response["body"]["variables"], varref_dict
)
def verify_variables(self, verify_dict, variables, varref_dict=None):
for variable in variables:
name = variable["name"]
self.assertIn(
name, verify_dict, 'variable "%s" in verify dictionary' % (name)
)
self.verify_values(verify_dict[name], variable, varref_dict)
def darwin_dwarf_missing_obj(self, initCommands):
self.build(debug_info="dwarf")
program = self.getBuildArtifact("a.out")
main_obj = self.getBuildArtifact("main.o")
self.assertTrue(os.path.exists(main_obj))
# Delete the main.o file that contains the debug info so we force an
# error when we run to main and try to get variables
os.unlink(main_obj)
self.create_debug_adaptor()
self.assertTrue(os.path.exists(program), "executable must exist")
self.launch(program=program, initCommands=initCommands)
functions = ["main"]
breakpoint_ids = self.set_function_breakpoints(functions)
self.assertEquals(len(breakpoint_ids), len(functions), "expect one breakpoint")
self.continue_to_breakpoints(breakpoint_ids)
locals = self.dap_server.get_local_variables()
verify_locals = {
"<error>": {
"equals": {"type": "const char *"},
"contains": {
"value": [
"debug map object file ",
'main.o" containing debug info does not exist, debug info will not be loaded',
]
},
},
}
varref_dict = {}
self.verify_variables(verify_locals, locals, varref_dict)
def do_test_scopes_variables_setVariable_evaluate(
self, enableAutoVariableSummaries: bool
):
"""
Tests the "scopes", "variables", "setVariable", and "evaluate"
packets.
"""
program = self.getBuildArtifact("a.out")
self.build_and_launch(
program, enableAutoVariableSummaries=enableAutoVariableSummaries
)
source = "main.cpp"
breakpoint1_line = line_number(source, "// breakpoint 1")
lines = [breakpoint1_line]
# Set breakpoint in the thread function so we can step the threads
breakpoint_ids = self.set_source_breakpoints(source, lines)
self.assertEqual(
len(breakpoint_ids), len(lines), "expect correct number of breakpoints"
)
self.continue_to_breakpoints(breakpoint_ids)
locals = self.dap_server.get_local_variables()
globals = self.dap_server.get_global_variables()
buffer_children = make_buffer_verify_dict(0, 32)
verify_locals = {
"argc": {"equals": {"type": "int", "value": "1"}},
"argv": {
"equals": {"type": "const char **"},
"startswith": {"value": "0x"},
"hasVariablesReference": True,
},
"pt": {
"equals": {"type": "PointType"},
"hasVariablesReference": True,
"children": {
"x": {"equals": {"type": "int", "value": "11"}},
"y": {"equals": {"type": "int", "value": "22"}},
"buffer": {"children": buffer_children},
},
},
"x": {"equals": {"type": "int"}},
}
verify_globals = {
"s_local": {"equals": {"type": "float", "value": "2.25"}},
"::g_global": {"equals": {"type": "int", "value": "123"}},
"s_global": {"equals": {"type": "int", "value": "234"}},
}
varref_dict = {}
self.verify_variables(verify_locals, locals, varref_dict)
self.verify_variables(verify_globals, globals, varref_dict)
# pprint.PrettyPrinter(indent=4).pprint(varref_dict)
# We need to test the functionality of the "variables" request as it
# has optional parameters like "start" and "count" to limit the number
# of variables that are fetched
varRef = varref_dict["pt.buffer"]
response = self.dap_server.request_variables(varRef)
self.verify_variables(buffer_children, response["body"]["variables"])
# Verify setting start=0 in the arguments still gets all children
response = self.dap_server.request_variables(varRef, start=0)
self.verify_variables(buffer_children, response["body"]["variables"])
# Verify setting count=0 in the arguments still gets all children.
# If count is zero, it means to get all children.
response = self.dap_server.request_variables(varRef, count=0)
self.verify_variables(buffer_children, response["body"]["variables"])
# Verify setting count to a value that is too large in the arguments
# still gets all children, and no more
response = self.dap_server.request_variables(varRef, count=1000)
self.verify_variables(buffer_children, response["body"]["variables"])
# Verify setting the start index and count gets only the children we
# want
response = self.dap_server.request_variables(varRef, start=5, count=5)
self.verify_variables(
make_buffer_verify_dict(5, 5), response["body"]["variables"]
)
# Verify setting the start index to a value that is out of range
# results in an empty list
response = self.dap_server.request_variables(varRef, start=32, count=1)
self.assertEqual(
len(response["body"]["variables"]),
0,
"verify we get no variable back for invalid start",
)
# Test evaluate
expressions = {
"pt.x": {
"equals": {"result": "11", "type": "int"},
"hasVariablesReference": False,
},
"pt.buffer[2]": {
"equals": {"result": "2", "type": "int"},
"hasVariablesReference": False,
},
"pt": {
"equals": {"type": "PointType"},
"startswith": {
"result": "{x:11, y:22}"
if enableAutoVariableSummaries
else "PointType @ 0x"
},
"hasVariablesReference": True,
},
"pt.buffer": {
"equals": {"type": "int[32]"},
"startswith": {
"result": "{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ...}"
if enableAutoVariableSummaries
else "int[32] @ 0x"
},
"hasVariablesReference": True,
},
"argv": {
"equals": {"type": "const char **"},
"startswith": {"result": "0x"},
"hasVariablesReference": True,
},
"argv[0]": {
"equals": {"type": "const char *"},
"startswith": {"result": "0x"},
"hasVariablesReference": True,
},
"2+3": {
"equals": {"result": "5", "type": "int"},
"hasVariablesReference": False,
},
}
for expression in expressions:
response = self.dap_server.request_evaluate(expression)
self.verify_values(expressions[expression], response["body"])
# Test setting variables
self.set_local("argc", 123)
argc = self.get_local_as_int("argc")
self.assertEqual(argc, 123, "verify argc was set to 123 (123 != %i)" % (argc))
self.set_local("argv", 0x1234)
argv = self.get_local_as_int("argv")
self.assertEqual(
argv, 0x1234, "verify argv was set to 0x1234 (0x1234 != %#x)" % (argv)
)
# Set a variable value whose name is synthetic, like a variable index
# and verify the value by reading it
self.dap_server.request_setVariable(varRef, "[0]", 100)
response = self.dap_server.request_variables(varRef, start=0, count=1)
self.verify_variables(
make_buffer_verify_dict(0, 1, 100), response["body"]["variables"]
)
# Set a variable value whose name is a real child value, like "pt.x"
# and verify the value by reading it
varRef = varref_dict["pt"]
self.dap_server.request_setVariable(varRef, "x", 111)
response = self.dap_server.request_variables(varRef, start=0, count=1)
value = response["body"]["variables"][0]["value"]
self.assertEqual(
value, "111", "verify pt.x got set to 111 (111 != %s)" % (value)
)
# We check shadowed variables and that a new get_local_variables request
# gets the right data
breakpoint2_line = line_number(source, "// breakpoint 2")
lines = [breakpoint2_line]
breakpoint_ids = self.set_source_breakpoints(source, lines)
self.assertEqual(
len(breakpoint_ids), len(lines), "expect correct number of breakpoints"
)
self.continue_to_breakpoints(breakpoint_ids)
verify_locals["argc"]["equals"]["value"] = "123"
verify_locals["pt"]["children"]["x"]["equals"]["value"] = "111"
verify_locals["x @ main.cpp:17"] = {"equals": {"type": "int", "value": "89"}}
verify_locals["x @ main.cpp:19"] = {"equals": {"type": "int", "value": "42"}}
verify_locals["x @ main.cpp:21"] = {"equals": {"type": "int", "value": "72"}}
self.verify_variables(verify_locals, self.dap_server.get_local_variables())
# Now we verify that we correctly change the name of a variable with and without differentiator suffix
self.assertFalse(self.dap_server.request_setVariable(1, "x2", 9)["success"])
self.assertFalse(
self.dap_server.request_setVariable(1, "x @ main.cpp:0", 9)["success"]
)
self.assertTrue(
self.dap_server.request_setVariable(1, "x @ main.cpp:17", 17)["success"]
)
self.assertTrue(
self.dap_server.request_setVariable(1, "x @ main.cpp:19", 19)["success"]
)
self.assertTrue(
self.dap_server.request_setVariable(1, "x @ main.cpp:21", 21)["success"]
)
# The following should have no effect
self.assertFalse(
self.dap_server.request_setVariable(1, "x @ main.cpp:21", "invalid")[
"success"
]
)
verify_locals["x @ main.cpp:17"]["equals"]["value"] = "17"
verify_locals["x @ main.cpp:19"]["equals"]["value"] = "19"
verify_locals["x @ main.cpp:21"]["equals"]["value"] = "21"
self.verify_variables(verify_locals, self.dap_server.get_local_variables())
# The plain x variable shold refer to the innermost x
self.assertTrue(self.dap_server.request_setVariable(1, "x", 22)["success"])
verify_locals["x @ main.cpp:21"]["equals"]["value"] = "22"
self.verify_variables(verify_locals, self.dap_server.get_local_variables())
# In breakpoint 3, there should be no shadowed variables
breakpoint3_line = line_number(source, "// breakpoint 3")
lines = [breakpoint3_line]
breakpoint_ids = self.set_source_breakpoints(source, lines)
self.assertEqual(
len(breakpoint_ids), len(lines), "expect correct number of breakpoints"
)
self.continue_to_breakpoints(breakpoint_ids)
locals = self.dap_server.get_local_variables()
names = [var["name"] for var in locals]
# The first shadowed x shouldn't have a suffix anymore
verify_locals["x"] = {"equals": {"type": "int", "value": "17"}}
self.assertNotIn("x @ main.cpp:17", names)
self.assertNotIn("x @ main.cpp:19", names)
self.assertNotIn("x @ main.cpp:21", names)
self.verify_variables(verify_locals, locals)
@skipIfWindows
@skipIfRemote
def test_scopes_variables_setVariable_evaluate(self):
self.do_test_scopes_variables_setVariable_evaluate(
enableAutoVariableSummaries=False
)
@skipIfWindows
@skipIfRemote
def test_scopes_variables_setVariable_evaluate_with_descriptive_summaries(self):
self.do_test_scopes_variables_setVariable_evaluate(
enableAutoVariableSummaries=True
)
def do_test_scopes_and_evaluate_expansion(self, enableAutoVariableSummaries: bool):
"""
Tests the evaluated expression expands successfully after "scopes" packets
and permanent expressions persist.
"""
program = self.getBuildArtifact("a.out")
self.build_and_launch(
program, enableAutoVariableSummaries=enableAutoVariableSummaries
)
source = "main.cpp"
breakpoint1_line = line_number(source, "// breakpoint 1")
lines = [breakpoint1_line]
# Set breakpoint in the thread function so we can step the threads
breakpoint_ids = self.set_source_breakpoints(source, lines)
self.assertEqual(
len(breakpoint_ids), len(lines), "expect correct number of breakpoints"
)
self.continue_to_breakpoints(breakpoint_ids)
# Verify locals
locals = self.dap_server.get_local_variables()
buffer_children = make_buffer_verify_dict(0, 32)
verify_locals = {
"argc": {
"equals": {"type": "int", "value": "1"},
"missing": ["indexedVariables"],
},
"argv": {
"equals": {"type": "const char **"},
"startswith": {"value": "0x"},
"hasVariablesReference": True,
"missing": ["indexedVariables"],
},
"pt": {
"equals": {"type": "PointType"},
"hasVariablesReference": True,
"missing": ["indexedVariables"],
"children": {
"x": {
"equals": {"type": "int", "value": "11"},
"missing": ["indexedVariables"],
},
"y": {
"equals": {"type": "int", "value": "22"},
"missing": ["indexedVariables"],
},
"buffer": {
"children": buffer_children,
"equals": {"indexedVariables": 32},
},
},
},
"x": {
"equals": {"type": "int"},
"missing": ["indexedVariables"],
},
}
self.verify_variables(verify_locals, locals)
# Evaluate expandable expression twice: once permanent (from repl)
# the other temporary (from other UI).
expandable_expression = {
"name": "pt",
"response": {
"equals": {"type": "PointType"},
"startswith": {
"result": "{x:11, y:22}"
if enableAutoVariableSummaries
else "PointType @ 0x"
},
"missing": ["indexedVariables"],
"hasVariablesReference": True,
},
"children": {
"x": {"equals": {"type": "int", "value": "11"}},
"y": {"equals": {"type": "int", "value": "22"}},
"buffer": {"children": buffer_children},
},
}
# Evaluate from permanent UI.
permanent_expr_varref_dict = {}
response = self.dap_server.request_evaluate(
expandable_expression["name"], frameIndex=0, threadId=None, context="repl"
)
self.verify_values(
expandable_expression["response"],
response["body"],
permanent_expr_varref_dict,
expandable_expression["name"],
)
# Evaluate from temporary UI.
temporary_expr_varref_dict = {}
response = self.dap_server.request_evaluate(expandable_expression["name"])
self.verify_values(
expandable_expression["response"],
response["body"],
temporary_expr_varref_dict,
expandable_expression["name"],
)
# Evaluate locals again.
locals = self.dap_server.get_local_variables()
self.verify_variables(verify_locals, locals)
# Verify the evaluated expressions before second locals evaluation
# can be expanded.
var_ref = temporary_expr_varref_dict[expandable_expression["name"]]
response = self.dap_server.request_variables(var_ref)
self.verify_variables(
expandable_expression["children"], response["body"]["variables"]
)
# Continue to breakpoint 3, permanent variable should still exist
# after resume.
breakpoint3_line = line_number(source, "// breakpoint 3")
lines = [breakpoint3_line]
breakpoint_ids = self.set_source_breakpoints(source, lines)
self.assertEqual(
len(breakpoint_ids), len(lines), "expect correct number of breakpoints"
)
self.continue_to_breakpoints(breakpoint_ids)
var_ref = permanent_expr_varref_dict[expandable_expression["name"]]
response = self.dap_server.request_variables(var_ref)
self.verify_variables(
expandable_expression["children"], response["body"]["variables"]
)
# Test that frame scopes have corresponding presentation hints.
frame_id = self.dap_server.get_stackFrame()["id"]
scopes = self.dap_server.request_scopes(frame_id)["body"]["scopes"]
scope_names = [scope["name"] for scope in scopes]
self.assertIn("Locals", scope_names)
self.assertIn("Registers", scope_names)
for scope in scopes:
if scope["name"] == "Locals":
self.assertEquals(scope.get("presentationHint"), "locals")
if scope["name"] == "Registers":
self.assertEquals(scope.get("presentationHint"), "registers")
@skipIfWindows
@skipIfRemote
def test_scopes_and_evaluate_expansion(self):
self.do_test_scopes_and_evaluate_expansion(enableAutoVariableSummaries=False)
@skipIfWindows
@skipIfRemote
def test_scopes_and_evaluate_expansion_with_descriptive_summaries(self):
self.do_test_scopes_and_evaluate_expansion(enableAutoVariableSummaries=True)
def do_test_indexedVariables(self, enableSyntheticChildDebugging: bool):
"""
Tests that arrays and lldb.SBValue objects that have synthetic child
providers have "indexedVariables" key/value pairs. This helps the IDE
not to fetch too many children all at once.
"""
program = self.getBuildArtifact("a.out")
self.build_and_launch(
program, enableSyntheticChildDebugging=enableSyntheticChildDebugging
)
source = "main.cpp"
breakpoint1_line = line_number(source, "// breakpoint 4")
lines = [breakpoint1_line]
# Set breakpoint in the thread function so we can step the threads
breakpoint_ids = self.set_source_breakpoints(source, lines)
self.assertEqual(
len(breakpoint_ids), len(lines), "expect correct number of breakpoints"
)
self.continue_to_breakpoints(breakpoint_ids)
# Verify locals
locals = self.dap_server.get_local_variables()
# The vector variables might have one additional entry from the fake
# "[raw]" child.
raw_child_count = 1 if enableSyntheticChildDebugging else 0
verify_locals = {
"small_array": {"equals": {"indexedVariables": 5}},
"large_array": {"equals": {"indexedVariables": 200}},
"small_vector": {"equals": {"indexedVariables": 5 + raw_child_count}},
"large_vector": {"equals": {"indexedVariables": 200 + raw_child_count}},
"pt": {"missing": ["indexedVariables"]},
}
self.verify_variables(verify_locals, locals)
# We also verify that we produce a "[raw]" fake child with the real
# SBValue for the synthetic type.
verify_children = {
"[0]": {"equals": {"type": "int", "value": "0"}},
"[1]": {"equals": {"type": "int", "value": "0"}},
"[2]": {"equals": {"type": "int", "value": "0"}},
"[3]": {"equals": {"type": "int", "value": "0"}},
"[4]": {"equals": {"type": "int", "value": "0"}},
}
if enableSyntheticChildDebugging:
verify_children["[raw]"] = ({"contains": {"type": ["vector"]}},)
children = self.dap_server.request_variables(locals[2]["variablesReference"])[
"body"
]["variables"]
self.verify_variables(verify_children, children)
@skipIfWindows
@skipIfRemote
def test_indexedVariables(self):
self.do_test_indexedVariables(enableSyntheticChildDebugging=False)
@skipIfWindows
@skipIfRemote
def test_indexedVariables_with_raw_child_for_synthetics(self):
self.do_test_indexedVariables(enableSyntheticChildDebugging=True)
@skipIfWindows
@skipIfRemote
def test_registers(self):
"""
Test that registers whose byte size is the size of a pointer on
the current system get formatted as lldb::eFormatAddressInfo. This
will show the pointer value followed by a description of the address
itself. To test this we attempt to find the PC value in the general
purpose registers, and since we will be stopped in main.cpp, verify
that the value for the PC starts with a pointer and is followed by
a description that contains main.cpp.
"""
program = self.getBuildArtifact("a.out")
self.build_and_launch(program)
source = "main.cpp"
breakpoint1_line = line_number(source, "// breakpoint 1")
lines = [breakpoint1_line]
# Set breakpoint in the thread function so we can step the threads
breakpoint_ids = self.set_source_breakpoints(source, lines)
self.assertEqual(
len(breakpoint_ids), len(lines), "expect correct number of breakpoints"
)
self.continue_to_breakpoints(breakpoint_ids)
pc_name = None
arch = self.getArchitecture()
if arch == "x86_64":
pc_name = "rip"
elif arch == "x86":
pc_name = "rip"
elif arch.startswith("arm"):
pc_name = "pc"
if pc_name is None:
return
# Verify locals
reg_sets = self.dap_server.get_registers()
for reg_set in reg_sets:
if reg_set["name"] == "General Purpose Registers":
varRef = reg_set["variablesReference"]
regs = self.dap_server.request_variables(varRef)["body"]["variables"]
for reg in regs:
if reg["name"] == pc_name:
value = reg["value"]
self.assertTrue(value.startswith("0x"))
self.assertTrue("a.out`main + " in value)
self.assertTrue("at main.cpp:" in value)
@no_debug_info_test
@skipUnlessDarwin
def test_darwin_dwarf_missing_obj(self):
"""
Test that if we build a binary with DWARF in .o files and we remove
the .o file for main.cpp, that we get a variable named "<error>"
whose value matches the appriopriate error. Errors when getting
variables are returned in the LLDB API when the user should be
notified of issues that can easily be solved by rebuilding or
changing compiler options and are designed to give better feedback
to the user.
"""
self.darwin_dwarf_missing_obj(None)
@no_debug_info_test
@skipUnlessDarwin
def test_darwin_dwarf_missing_obj_with_symbol_ondemand_enabled(self):
"""
Test that if we build a binary with DWARF in .o files and we remove
the .o file for main.cpp, that we get a variable named "<error>"
whose value matches the appriopriate error. Test with symbol_ondemand_enabled.
"""
initCommands = ["settings set symbols.load-on-demand true"]
self.darwin_dwarf_missing_obj(initCommands)