* wrapper.c (gdb_value_assign): New function. Longjump-free
version of value_assign.
(wrap_value_assign): New function. Wrapper for value_assign.
* wrapper.h: Add declaration for the above.
* varobj.c (varobj_set_value): Use gdb_value_assign, not
value_assign which can longjump. Do not change varobj value if
assign fails.
* varobj.c (type_changeable): Arrays are not changeable.
Trying to check for updates was causing an error if the array lived
in a register as gdb value_equal() cannot handle that case yet.
* varobj.c (varobj_update): Prevent uninitialized error code to be
returned on type_changed. Also, prevent value_equal() to be called
for the types we do not want to test for updates.
* wrapper.c (gdb_value_subscript, wrap_value_subscript): New functions.
Safe version of value_subscript.
* varobj.c (): Use gdb_value_subscript() to get an array element value.
Add support for a variable object that tries to evaluate itself in
the currently selected frame, rather than in a fixed frame.
* wrapper.c,h (gdb_parse_exp_1): Added a wrapper for
gdb_parse_exp_1.
* varobj.h: Added USE_CURRENT_FRAME to varobj_type & changed def'n
of varobj_create.
* varobj.c (varobj_list): Return type indicates whether the
variable's type has changed (for current frame variables).
(varobj_update): Handle the case where the variable's type has
changed.
(delete_variable_1): Allow for deletion of variables that have not
been installed yet.
(new_root_variable): Initialize use_selected_frame variable.
(value_of_root): This is where most of the work to handle "current
frame" variables was added. Most of the complexity involves
handling the case where the type of the variable has changed.
(varobj_create): Add a "type" argument, to tell if the
variable is one of these "current frame" variables. Also protect
call to parse_exp_1 from long jumping.
* mi-var-block.exp: The error report from varobj_create changed
since I am now trapping parse_exp_1 errors. Change the tests to
match the new error message.
* mi-var-child.exp: Ditto.
* mi-var-cmd.exp: Ditto.
* lib/gdb.exp: Fix the gdbtk_start routine to correctly find all
the library directories.
* gdbtk-varobj.c (variable_create): Pass the correct
"how_specified" flag to the varobj_create routine.
