3.16.63-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Richard Weinberger <richard@xxxxxx> commit 7ff1e34bbdc15acab823b1ee4240e94623d50ee8 upstream. Fixes: arch/um/os-Linux/skas/process.c:613:1: warning: control reaches end of non-void function [-Wreturn-type] longjmp() never returns but gcc still warns that the end of the function can be reached. Add a return code and debug aid to detect this impossible case. Signed-off-by: Richard Weinberger <richard@xxxxxx> Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx> --- arch/um/os-Linux/skas/process.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -694,6 +694,11 @@ int start_idle_thread(void *stack, jmp_b fatal_sigsegv(); } longjmp(*switch_buf, 1); + + /* unreachable */ + printk(UM_KERN_ERR "impossible long jump!"); + fatal_sigsegv(); + return 0; } void initial_thread_cb_skas(void (*proc)(void *), void *arg)
