blob: c0a311f7ac9e60c6310aecb8857f37bf98bd4c45 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
"""
Test that we can backtrace correctly with 'noreturn' functions on the stack
"""
from __future__ import print_function
import os, time
import lldb
from lldbsuite.test.lldbtest import *
import lldbsuite.test.lldbutil as lldbutil
class NoreturnUnwind(TestBase):
mydir = TestBase.compute_mydir(__file__)
@expectedFailurei386("llvm.org/pr25338")
@skipIfWindows # clang-cl does not support gcc style attributes.
def test (self):
"""Test that we can backtrace correctly with 'noreturn' functions on the stack"""
self.build()
self.setTearDownCleanup()
exe = os.path.join(os.getcwd(), "a.out")
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
process = target.LaunchSimple (None, None, self.get_process_working_directory())
if not process:
self.fail("SBTarget.Launch() failed")
if process.GetState() != lldb.eStateStopped:
self.fail("Process should be in the 'stopped' state, "
"instead the actual state is: '%s'" %
lldbutil.state_type_to_str(process.GetState()))
thread = process.GetThreadAtIndex(0)
abort_frame_number = 0
for f in thread.frames:
# Some C libraries mangle the abort symbol into __GI_abort.
if f.GetFunctionName() in ["abort", "__GI_abort"]:
break
abort_frame_number = abort_frame_number + 1
if self.TraceOn():
print("Backtrace once we're stopped:")
for f in thread.frames:
print(" %d %s" % (f.GetFrameID(), f.GetFunctionName()))
# I'm going to assume that abort() ends up calling/invoking another
# function before halting the process. In which case if abort_frame_number
# equals 0, we didn't find abort() in the backtrace.
if abort_frame_number == len(thread.frames):
self.fail("Unable to find abort() in backtrace.")
func_c_frame_number = abort_frame_number + 1
if thread.GetFrameAtIndex (func_c_frame_number).GetFunctionName() != "func_c":
self.fail("Did not find func_c() above abort().")
# This depends on whether we see the func_b inlined function in the backtrace
# or not. I'm not interested in testing that aspect of the backtrace here
# right now.
if thread.GetFrameAtIndex (func_c_frame_number + 1).GetFunctionName() == "func_b":
func_a_frame_number = func_c_frame_number + 2
else:
func_a_frame_number = func_c_frame_number + 1
if thread.GetFrameAtIndex (func_a_frame_number).GetFunctionName() != "func_a":
self.fail("Did not find func_a() above func_c().")
main_frame_number = func_a_frame_number + 1
if thread.GetFrameAtIndex (main_frame_number).GetFunctionName() != "main":
self.fail("Did not find main() above func_a().")
|
