Multiple functions with no return value although declared in prototype

[maxgerhardt]

GCC is throwing errors in your code regarding warning: no return statement in function returning non-void errors.

E.g., where is the return statement in this function that's supposed return a signed short?

arduino/cores/w600/HardwareSerial.cpp

Lines 45 to 57 in b94d129

	extern "C" signed short uart_rx_cb(uint16_t uart_no, unsigned short len,
	unsigned char * pbuf, int *pend)
	{
	int ret = 0;
	int _len = 0;
	do
	{
	ret = tls_uart_read(uart_no, pbuf + *pend, 1);
	if (ret > 0)
	(*pend) = *pend + ret;
	_len += ret;
	} while (ret != 0);
	}

Same here

arduino/cores/w600/HardwareSerial.cpp

Lines 148 to 175 in b94d129

	int init_uart1_cfg(int uart_no, bool uart1_mul)
	{
	unsigned int reg = 0;
	if (TLS_UART_1 == uart_no
	&& true == uart1_mul
	&& ~(INIT_UART1_MUL & init_uart1_pin_cfg))
	{
	delay(10); // SHOULD delay 0.010 second.
	reg = tls_reg_read32(HR_GPIOB_AFSEL);
	reg &= ~(BIT(11) | BIT(12));
	tls_reg_write32(HR_GPIOB_AFSEL, reg);
	wm_uart1_rx_config(TLS_UART1_MUL_RX);
	wm_uart1_tx_config(TLS_UART1_MUL_TX);
	} else if (TLS_UART_1 == uart_no
	&& false == uart1_mul
	&& ~(INIT_UART1_DEF & init_uart1_pin_cfg))
	{
	delay(10); // SHOULD delay 0.010 second.
	reg = tls_reg_read32(HR_GPIOB_AFSEL);
	reg &= ~(BIT(17) | BIT(18));
	tls_reg_write32(HR_GPIOB_AFSEL, reg);
	wm_uart1_rx_config(WM_IO_PB_11);
	wm_uart1_tx_config(WM_IO_PB_12);
	init_uart1_pin_cfg = INIT_UART1_DEF;
	}
	}

[maxgerhardt]

What's going on here? Is this project completely abandoned?