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* gdb.texinfo (Print Settings): Add documentation for "set/show

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print frame-arguments".
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Joel Brobecker 2007-11-12 05:19:17 +00:00
parent 8f39ba8ef2
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gdb/doc/ChangeLog
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@ -1,3 +1,8 @@
2007-11-10 Joel Brobecker <brobecker@adacore.com>
* gdb.texinfo (Print Settings): Add documentation for "set/show
print frame-arguments".
2007-11-05 Luis Machado <luisgpm@br.ibm.com>
* gdb.texinfo: Update printf command's description.

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gdb/doc/gdb.texinfo
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@ -6240,6 +6240,51 @@ Setting @var{number-of-elements} to zero means that the printing is unlimited.
Display the number of elements of a large array that @value{GDBN} will print.
If the number is 0, then the printing is unlimited.
@item set print frame-arguments @var{value}
@cindex printing frame argument values
@cindex print all frame argument values
@cindex print frame argument values for scalars only
@cindex do not print frame argument values
This command allows to control how the values of arguments are printed
when the debugger prints a frame (@pxref{Frames}). The possible
values are:
@table @code
@item all
The values of all arguments are printed. This is the default.
@item scalars
Print the value of an argument only if it is a scalar. The value of more
complex arguments such as arrays, structures, unions, etc, is replaced
by @code{@dots{}}. Here is an example where only scalar arguments are shown:
@smallexample
#1 0x08048361 in call_me (i=3, s=@dots{}, ss=0xbf8d508c, u=@dots{}, e=green)
at frame-args.c:23
@end smallexample
@item none
None of the argument values are printed. Instead, the value of each argument
is replaced by @code{@dots{}}. In this case, the example above now becomes:
@smallexample
#1 0x08048361 in call_me (i=@dots{}, s=@dots{}, ss=@dots{}, u=@dots{}, e=@dots{})
at frame-args.c:23
@end smallexample
@end table
By default, all argument values are always printed. But this command
can be useful in several cases. For instance, it can be used to reduce
the amount of information printed in each frame, making the backtrace
more readable. Also, this command can be used to improve performance
when displaying Ada frames, because the computation of large arguments
can sometimes be CPU-intensive, especiallly in large applications.
Setting @code{print frame-arguments} to @code{scalars} or @code{none}
avoids this computation, thus speeding up the display of each Ada frame.
@item show print frame-arguments
Show how the value of arguments should be displayed when printing a frame.
@item set print repeats
@cindex repeated array elements
Set the threshold for suppressing display of repeated array