These are the fixes for GCC warnings when building with --enable-kdb. I did not fix all warnings, some are left.
[PATCH 01/19] ddb: fix implicit declaration of functions [PATCH 02/19] ddb/db_break.c: quiet GCC warning about uninitialized variable [PATCH 03/19] Fix call of function with qualified void return type [PATCH 04/19] ddb/db_examine.c: fix signedness [PATCH 05/19] ddb/db_expr.h: remove (db_addr_t *) argument name [PATCH 06/19] ddb: fix implicit declaration of function [PATCH 07/19] ddb/db_run.c: remove set but unused variable [PATCH 08/19] ddb/db_run.c: trivial stylistic fix for consistency [PATCH 09/19] ddb/db_run.c: move declaration of brpc into SOFTWARE_SSTEP [PATCH 10/19] ddb/db_sym.c: add parentheses around assignment used as truth value [PATCH 11/19] ddb/db_variables.c: fix initializations from incompatible pointer type [PATCH 12/19] ipc/ipc_print.h: include ipc/ipc_pset.h for ipc_pset_t [PATCH 13/19] kern/startup.c: fix implicit declaration of function [PATCH 14/19] kern/xpr.c: quiet warning about uninitialized variable [PATCH 15/19] device/net_io.c: quiet the warning about uninitialized variable [PATCH 16/19] Fix implicit declaration of function [PATCH 17/19] i386/i386at/kd.c: add forward declaration [PATCH 18/19] i386/i386/db_interface.c: add forward declaration [PATCH 19/19] i386/i386/db_interface.c: fix implicit declaration of function
