how to print vector<bool> value in gdb?

[huomingxu]

in gdb, when print an element of vector<bool>, it returns the offset of
the bi
t
instead of the value.
e.g: (visible is of type vector<bool>)
(gdb) p layout._visible[3]
$15 = {_M_p = 0x9817d00, _M_mask = 8}
(gdb) p layout._visible[3] & 0x80
Structure has no component named operator&.
(gdb)


How to display its real value?

No such problem when debugging on VC
thanks a lot

 

[Rolf Magnus]

in gdb,

Off-topic. This newsgroup is about the C++ language, not about debuggers.
Try gnu.utils.help.

 

[huomingxu]

Thank you very much and sorry for that.