assertion "REENT malloc succeeded" failed

@mattias norlander​ 

I found the issue is happend while using new toolchain(gnu-tools-for-stm32_9-2020-q2-update...). If i switch back to the other installed toolchain (2018), it works fine. I saw you solved some toolchain issues, so could you help to check this issue?

Hi @JLee.32​ ,

Latest STM32CubeIDE version is 1.7.0. Is initially reported issue still faced with this version?

-Amel

Hi @Markus GIRDLAND​  & @mattias norlander​ ,

I found the root cause is that localtime() is used in the task of freertos. localtime() calls malloc() which returns -1 due to _sbrk(). Using localtime_r() is one solution, but I'm wondering if we can overwrite the standard version of malloc? Please see this link. I add the following code at main.c and main.h, but it shows error. How should I do to overwrite the standard version of malloc?

https://www.freertos.org/FreeRTOS_Support_Forum_Archive/October_2009/freertos_malloc_function_in_FreeRTOS_3444349.html

~~~~~

/* Defining malloc/free should overwrite the standard versions provided by the compiler. /

void malloc (size_t size)

{

/* Call the FreeRTOS version of malloc. */

return pvPortMalloc( size );

}

void free (void* ptr)

{

/* Call the FreeRTOS version of free. */

vPortFree( ptr );

}

~~~~~

Regards,

Jimmy