Fetch varobj values from memory in a single place,
and only fetch the values that are really needed.
* varobj.c (struct varobj): Clarify comment.
(my_value_equal): Remove.
(install_new_value): New function.
(type_of_child): Remove.
(varobj_create): Use install_new_value.
(varobj_set_value): Use value_contents_equal, not
my_value_equal.
(varobj_update): Use install_new_value.
(create_child): Likewise. Inline type_of_child here.
(value_of_child): Don't fetch the value.
(c_value_of_root): Likewise.
(c_value_of_variable): Likewise.
(type_changeable): Improve comments.
* gdb.base/break.exp: Add test for breakpoint at }
* gdb.cp/anon-union.cc: Add code at end of function.
* gdb.cp/anon-union.exp: Adjust end of function breakpoint.
* gdb.mi/var-cmd.c: Add code at end of function.
* gdb.mi/mi-var-display.exp: Adjust end of next.
* gdb.mi/mi2-var-display.exp: Likewise.
* gdb.base/fileio.c: Add stop function and insert calls at
stopping places.
* gdb.base/fileio.exp: Breakpoint stop function and remove
explicit line number references.
* gdb.cp/m-static.cc (main): Write to test4.dummy, so that test4
is allocated by the compiler.
* gdb.mi/var-cmd.c: (do_special_tests): Write to u, anonu, s,
anons, e, anone to force their allocation by the compiler.
* gdb.mi/mi-stack.c: New file, based on gdb.mi/basics.c.
* gdb.mi/mi-var-child.c: New file, based on gdb.mi/var-cmd.c.
* gdb.mi/mi-stack.exp: Update to use mi-stack.c as a source file.
* gdb.mi/mi-var-child.exp: Update to use mi-var-child.c as a source
file.
(do_children_tests): Assign values to the extra elements.
* gdb.mi/mi-var-child.exp: Adapt tests for extra elements and use
them for tests for "-var-update --no-values" and
"-var-update --all-values".
Add test for "-var-list-children --simple-values".
* gdb.mi/basics.c (callee4): Add integer array D[3]...
* gdb.mi/mi-stack.exp (test_stack_locals_listing): ...to test
"-stack-list-locals --simple-values" Improve doc strings and
comments.
