* c-typeck.c (struct constructor_stack): Add range_stack member.
(really_start_incremental_init): Clear it.
(push_init_level): Save constructor_range_stack and clear it if
pushing explicit braces.
(pop_init_level): abort if constructor_range_stack is non-zero at
explicit closing brace. Restore saved constructor_range_stack if
not implicit.
* gcc.dg/gnu99-init-1.c: Add 3 more designated range initializer
tests.
From-SVN: r39302
