10.9.3 Pretty-Printer Commands

info pretty-printer [object-regexp [name-regexp]]

Print the list of installed pretty-printers. This includes disabled pretty-printers, which are marked as such.

object-regexp is a regular expression matching the objects whose pretty-printers to list. Objects can be global, the program space’s file (see Progspaces In Python), and the object files within that program space (see Objfiles In Python). See Selecting Pretty-Printers, for details on how GDB looks up a printer from these three objects.

name-regexp is a regular expression matching the name of the printers to list.

disable pretty-printer [object-regexp [name-regexp]]

Disable pretty-printers matching object-regexp and name-regexp. A disabled pretty-printer is not forgotten, it may be enabled again later.

enable pretty-printer [object-regexp [name-regexp]]

Enable pretty-printers matching object-regexp and name-regexp.

Example:

Suppose we have three pretty-printers installed: one from library1.so named foo that prints objects of type foo, and another from library2.so named bar that prints two types of objects, bar1 and bar2.

(gdb) info pretty-printer
library1.so:
  foo
library2.so:
  bar
    bar1
    bar2
(gdb) info pretty-printer library2
library2.so:
  bar
    bar1
    bar2
(gdb) disable pretty-printer library1
1 printer disabled
2 of 3 printers enabled
(gdb) info pretty-printer
library1.so:
  foo [disabled]
library2.so:
  bar
    bar1
    bar2
(gdb) disable pretty-printer library2 bar;bar1
1 printer disabled
1 of 3 printers enabled
(gdb) info pretty-printer library2
library1.so:
  foo [disabled]
library2.so:
  bar
    bar1 [disabled]
    bar2
(gdb) disable pretty-printer library2 bar
1 printer disabled
0 of 3 printers enabled
(gdb) info pretty-printer library2
library1.so:
  foo [disabled]
library2.so:
  bar [disabled]
    bar1 [disabled]
    bar2

Note that for bar the entire printer can be disabled, as can each individual subprinter.