<html>
<head>
<base href="https://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Watchpoint::SetEnabled & therefore SBWatchpoint::SetEnabled don't actually disable a watchpoint"
href="https://llvm.org/bugs/show_bug.cgi?id=30789">30789</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Watchpoint::SetEnabled & therefore SBWatchpoint::SetEnabled don't actually disable a watchpoint
</td>
</tr>
<tr>
<th>Product</th>
<td>lldb
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>lldb-dev@lists.llvm.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jingham@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>This is on MacOS x86_64:
Build the test case in functionalities/watchpoint/watchpoint_command/command
and do:
(lldb) b s -p "Set break"
Breakpoint 2: where = a.out`main + 63 at main.cpp:22, address =
0x0000000100000ecf
(lldb) run
Process 98597 launched: 'a.out' (x86_64)
&global=0x100001018
Process 98597 stopped
* thread #1: tid = 0x1740788, function: main , stop reason = breakpoint 2.1
frame #0: 0x0000000100000ecf a.out`main at main.cpp:22
19 int main(int argc, char** argv) {
20 int local = 0;
21 printf("&global=%p\n", &global);
-> 22 printf("about to write to 'global'...\n"); // Set break point at
this line.
23 for (int i = 0; i < 10; ++i)
24 modify(global);
25
(lldb) watch set variable global
Watchpoint created: Watchpoint 1: addr = 0x100001018 size = 4 state = enabled
type = w
declare @ 'main.cpp:12'
watchpoint spec = 'global'
new value: 0
(lldb) c
Process 98597 resuming
about to write to 'global'...
Watchpoint 1 hit:
old value: 0
new value: 1
Process 98597 stopped
* thread #1: tid = 0x1740788, function: modify(int&) , stop reason = watchpoint
1
frame #0: 0x0000000100000f53 a.out`modify(int&) at main.cpp:17
14
15 static void modify(int32_t &var) {
16 ++var;
-> 17 }
18
19 int main(int argc, char** argv) {
20 int local = 0;
(lldb) script lldb.target.FindWatchpointByID(1).SetEnabled(False)
(lldb) watch list
Number of supported hardware watchpoints: 4
Current watchpoints:
Watchpoint 1: addr = 0x100001018 size = 4 state = disabled type = w
declare @ 'main.cpp:12'
watchpoint spec = 'global'
old value: 0
new value: 1
(lldb) c
Process 98597 resuming
Process 98597 stopped
* thread #1: tid = 0x1740788, function: modify(int&) , stop reason =
EXC_BREAKPOINT (code=EXC_I386_SGL, subcode=0x100001018)
frame #0: 0x0000000100000f53 a.out`modify(int&) at main.cpp:17
14
15 static void modify(int32_t &var) {
16 ++var;
-> 17 }
18
19 int main(int argc, char** argv) {
20 int local = 0;
So the watchpoint says it was disabled, but it actually didn't get disabled,
and we hit it on continue.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>