Description
Description
- Type: Enhancement
- Priority: Minor
Target
LPC1768
Toolchain:
GCC_ARM | ARM | IAR
Expected behavior
Should we compile without any warning.
Actual behavior
At the time of compiling, It's giving warnings.
Question
When I'm building the code for LPC1768, below warning is showing:-
Toolchain: - GCC_ARM
mbed_board.c@99,36: comparison between signed and unsigned integer expressions [-Wsign-compare]
Why this warning is not showing when I build with different toolchain(ARM & IAR)?
------snip------
int size = vsprintf(buffer, format, arg);
if (size > 0) {
if (!stdio_uart_inited) {
serial_init(&stdio_uart, STDIO_UART_TX, STDIO_UART_RX);
}
#if MBED_CONF_PLATFORM_STDIO_CONVERT_NEWLINES
for (unsigned int i = 0; i < size; i++) {
if (buffer[i] == '\n' && stdio_out_prev != '\r') {
serial_putc(&stdio_uart, '\r');
}
------snip------
In the above code, 'size' is the type of signed integer and 'i' is the type of unsigned integer
So, this comparison will give a warning but when I build with different toolchain(ARM & IAR),
this warning is not there..why?
Toolchain: - ARM & IAR
mbed_retarget.cpp@123,0: #177-D: function "openmode_to_posix" was declared but never referenced
Why this warning is not showing with GCC_ARM?
Please address this issue.