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Subject: Fix range validation of integer commands with "unlimited". 

The range validation added by

  http://sourceware.org/ml/gdb-patches/2013-03/msg00767.html

Changes things to allow setting the command to INT_MAX or UINT_MAX
directly, with signed and unsigned commands respectively.  However,
that went a little bit too far, as in the cases of var_integer and
var_uinteger, those values are actually implementation detail.  It's
better to not expose them in the interface, and have users assume
those values mean "unlimited" too, so to be safer to expand the range
of the commands in the future if we want to.  Yes, it's pedantic, and
it's not likely users actually will do this, but MI frontends and
Python scripts might.

gdb/
2013-03-22  Pedro Alves  <palves@redhat.com>
	    Yao Qi  <yao@codesourcery.com>
	    Mark Kettenis  <kettenis@gnu.org>

	* cli/cli-setshow.c (do_set_command) <var_uinteger>:
	Don't let the user set the value to UINT_MAX directly.
	<var_integer>: Don't let the user set the value to INT_MAX
	directly.
This commit is contained in:
Pedro Alves 2013-03-22 20:25:40 +00:00
parent ab19f3254b
commit 82b821e99d
2 changed files with 21 additions and 2 deletions
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9
gdb/ChangeLog
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@ -1,3 +1,12 @@
2013-03-22 Pedro Alves <palves@redhat.com>
Yao Qi <yao@codesourcery.com>
Mark Kettenis <kettenis@gnu.org>
* cli/cli-setshow.c (do_set_command) <var_uinteger>:
Don't let the user set the value to UINT_MAX directly.
<var_integer>: Don't let the user set the value to INT_MAX
directly.
2013-03-22 Jan Kratochvil <jan.kratochvil@redhat.com>
* remote.c (remote_unpush_target): New function.

14
gdb/cli/cli-setshow.c
View File

@ -278,7 +278,12 @@ do_set_command (char *arg, int from_tty, struct cmd_list_element *c)
if (c->var_type == var_uinteger && val == 0)
val = UINT_MAX;
else if (val > UINT_MAX)
else if (val < 0
/* For var_uinteger, don't let the user set the value
to UINT_MAX directly, as that exposes an
implementation detail to the user interface. */
|| (c->var_type == var_uinteger && val >= UINT_MAX)
|| (c->var_type == var_zuinteger && val > UINT_MAX))
error (_("integer %s out of range"), plongest (val));
if (*(unsigned int *) c->var != val)
@ -300,7 +305,12 @@ do_set_command (char *arg, int from_tty, struct cmd_list_element *c)
if (val == 0 && c->var_type == var_integer)
val = INT_MAX;
else if (val > INT_MAX || val < INT_MIN)
else if (val < INT_MIN
/* For var_integer, don't let the user set the value
to INT_MAX directly, as that exposes an
implementation detail to the user interface. */
|| (c->var_type == var_integer && val >= INT_MAX)
|| (c->var_type == var_zinteger && val > INT_MAX))
error (_("integer %s out of range"), plongest (val));
if (*(int *) c->var != val)