What will happen if you call xTaskCreateStatic with a NULL stack buffer when configSUPPORT_STATIC_ALLOCATION is enabled?

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FreeRTOS - Memory Management

What will happen if you call xTaskCreateStatic with a NULL stack buffer when configSUPPORT_STATIC_ALLOCATION is enabled?

AThe task will be created using dynamic allocation instead.

BThe function will return NULL indicating failure.

CThe task will be created but with a default stack size.

DThe system will ignore the NULL and allocate memory automatically.

Step-by-Step Solution

Solution:

Step 1: Understand static allocation requirements
Static allocation requires valid user-provided buffers; NULL stack buffer is invalid.
Step 2: Behavior of xTaskCreateStatic with NULL buffers
Function returns NULL to indicate failure if buffers are invalid.
Final Answer:
The function will return NULL indicating failure. -> Option B
Quick Check:
NULL buffers cause creation failure [OK]

Quick Trick: NULL buffers cause xTaskCreateStatic to fail [OK]

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