CODEWITHSUNDEEP
debugginglldb
user3630140
user3630140

Reputation: 13

Set breakpoint on symbol with lldb

I am trying to set a breakpoint on a function but lldb gives me an error "WARNING: Unable to resolve breakpoints to any actual locations.."

Following their example over at http://lldb.llvm.org/lldb-gdb.html , I have to use breakpoint set --method xxxxxxxxx

The function where I try to set a breakpoint is called 

 pf::WebViewImpl::~WebViewImpl()
 __ZN2pf11WebViewImplD1Ev

Which one should I use to be able to set a breakpoint?

Upvotes: 1

Views: 5021

Answers (1)

Jason Molenda
Jason Molenda

Reputation: 15375

You can put a breakpoint on your destructor using the --method option,

(lldb) br s -M ~WebViewImpl

You can use the --name option with just the dtor method name too,

(lldb) br s -n ~WebViewImpl

and lldb should find it. Finally, you can pass the mangled name to breakpoint set and that will work as well,

(lldb) br s -n _ZN2pf11WebViewImplD1Ev

Note that there's only one underscore in the mangled name - nm(1)'s output will list a leading underscore that you need to omit.

If this method is in a shared library or framework and the process hasn't launched yet, then lldb is correct in saying "Unable to resolve breakpoint to any actual locations". Once your process starts running, the framework/solib will be loaded, lldb will evaluate all breakpoints and see that it now has a valid location.

Upvotes: 4

Related Questions