GDB: How to check current line number during debug

Question

How do I check the current line number that I'm stopped in when debugging with GDB? I would have thought this would be obvious (and maybe it is) but I don't see it on the GDB Cheat Sheet.

Answer 1

Some digging around revealed the following methods:

1. frame: This command was exactly what I was looking for. Output looked as follows:

   (gdb) frame #0  MyDialog::on_saveButton_clicked (this=0x72bf9e0) at src/ui/dialog/MyDialog.cxx:86 86          _item->save(); (gdb)  

2. where or bt (same effect): This prints out the call stack, ending on the current line.

3. list *$pc: This doesn't tell you the exact line but it prints out the surrounding lines with the current line in the center.