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.

Printing values and frame arguments is done by default using the enabled pretty printers.

The print option -raw-values and GDB setting set print raw-values (see set print raw-values) can be used to print values without applying the enabled pretty printers.

Similarly, the backtrace option -raw-frame-arguments and GDB setting set print raw-frame-arguments (see set print raw-frame-arguments) can be used to ignore the enabled pretty printers when printing frame argument values.