[lldb-dev] [Bug 36435] New: Unexpected conditional breakpoint hit
via lldb-dev
lldb-dev at lists.llvm.org
Mon Feb 19 04:43:41 PST 2018
https://bugs.llvm.org/show_bug.cgi?id=36435
Bug ID: 36435
Summary: Unexpected conditional breakpoint hit
Product: lldb
Version: 6.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: lldb-dev at lists.llvm.org
Reporter: dantipov at nvidia.com
CC: llvm-bugs at lists.llvm.org
Created attachment 19898
--> https://bugs.llvm.org/attachment.cgi?id=19898&action=edit
Sample program
In GDB:
$ gdb -q t-thread3
Reading symbols from t-thread3...done.
(gdb) b f if v > 1
Breakpoint 1 at 0x400a4c: file t-thread3.cc, line 14.
(gdb) r
Starting program: /home/dantipov/tmp/t-thread3
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7ffff6edf700 (LWP 16244)]
[New Thread 0x7ffff66de700 (LWP 16245)]
[New Thread 0x7ffff5edd700 (LWP 16246)]
[New Thread 0x7ffff56dc700 (LWP 16247)]
[Switching to Thread 0x7ffff5edd700 (LWP 16246)]
Thread 4 "t-thread3" hit Breakpoint 1, f (v=2) at t-thread3.cc:14
14 g (v);
(gdb) c
Continuing.
[Switching to Thread 0x7ffff56dc700 (LWP 16247)]
Thread 5 "t-thread3" hit Breakpoint 1, f (v=3) at t-thread3.cc:14
14 g (v);
(gdb) c
Continuing.
[Switching to Thread 0x7ffff5edd700 (LWP 16246)]
Thread 4 "t-thread3" hit Breakpoint 1, f (v=2) at t-thread3.cc:14
14 g (v);
(gdb) c
Continuing.
[Switching to Thread 0x7ffff56dc700 (LWP 16247)]
Thread 5 "t-thread3" hit Breakpoint 1, f (v=3) at t-thread3.cc:14
14 g (v);
(gdb) c
Continuing.
[Switching to Thread 0x7ffff5edd700 (LWP 16246)]
Thread 4 "t-thread3" hit Breakpoint 1, f (v=2) at t-thread3.cc:14
14 g (v);
(gdb) c
Continuing.
[Switching to Thread 0x7ffff56dc700 (LWP 16247)]
Thread 5 "t-thread3" hit Breakpoint 1, f (v=3) at t-thread3.cc:14
14 g (v);
(gdb) c
Continuing.
[Switching to Thread 0x7ffff5edd700 (LWP 16246)]
Thread 4 "t-thread3" hit Breakpoint 1, f (v=2) at t-thread3.cc:14
14 g (v);
In LLDB:
$ /home/dantipov/.local/llvm-6.0.0/bin/lldb t-thread3
(lldb) target create "t-thread3"
Current executable set to 't-thread3' (x86_64).
(lldb) breakpoint set -n f -c 'v > 1'
Breakpoint 1: where = t-thread3`f(int) + 11 at t-thread3.cc:14, address =
0x0000000000400a4c
(lldb) run
Process 16274 launched: '/home/dantipov/tmp/t-thread3' (x86_64)
Process 16274 stopped
* thread #2, name = 't-thread3', stop reason = breakpoint 1.1
frame #0: 0x0000000000400a4c t-thread3`f(v=0) at t-thread3.cc:14
11 {
12 while (true)
13 {
-> 14 g (v); ;; 0 > 1
?
15 }
16 }
17
thread #3, name = 't-thread3', stop reason = breakpoint 1.1
frame #0: 0x0000000000400a4c t-thread3`f(v=1) at t-thread3.cc:14
11 {
12 while (true)
13 {
-> 14 g (v); ;; 1 > 1
?
15 }
16 }
17
thread #4, name = 't-thread3', stop reason = breakpoint 1.1
frame #0: 0x0000000000400a4c t-thread3`f(v=2) at t-thread3.cc:14
11 {
12 while (true)
13 {
-> 14 g (v); ;; OK
15 }
16 }
17
(lldb) process continue
Process 16274 resuming
Process 16274 stopped
* thread #2, name = 't-thread3', stop reason = breakpoint 1.1
frame #0: 0x0000000000400a4c t-thread3`f(v=0) at t-thread3.cc:14
11 {
12 while (true)
13 {
-> 14 g (v); ;; 0 > 1
?
15 }
16 }
17
thread #3, name = 't-thread3', stop reason = breakpoint 1.1
frame #0: 0x0000000000400a4c t-thread3`f(v=1) at t-thread3.cc:14
11 {
12 while (true)
13 {
-> 14 g (v); ;; 1 > 1
?
15 }
16 }
17
thread #4, name = 't-thread3', stop reason = breakpoint 1.1
frame #0: 0x0000000000400a4c t-thread3`f(v=2) at t-thread3.cc:14
11 {
12 while (true)
13 {
-> 14 g (v); ;; OK
15 }
16 }
17
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