[Solved] Identify the error in the following FreeRTOS code snippet:void *ptr = pvPortMalloc(50); // Some code using ptr vPortFree(ptr); vPortFree(ptr); | FreeRTOS

FreeRTOS - Memory Management

Identify the error in the following FreeRTOS code snippet:

void *ptr = pvPortMalloc(50);
// Some code using ptr
vPortFree(ptr);
vPortFree(ptr);

ADouble free of the same pointer

BMissing check if pvPortMalloc returned NULL

CIncorrect function name vPortFree

DMemory leak due to not freeing ptr

Step-by-Step Solution

Solution:

Step 1: Review memory allocation and freeing
pvPortMalloc(50) allocates memory and returns a pointer stored in ptr. The first vPortFree(ptr) frees this memory.
Step 2: Identify the problem with second free
The second vPortFree(ptr) attempts to free the same memory again, causing a double free error which can crash or corrupt memory.
Final Answer:
Double free of the same pointer -> Option A
Quick Check:
Freeing pointer twice causes error [OK]

Quick Trick: Never free the same pointer twice without resetting it [OK]

Common Mistakes:

Master "Memory Management" in FreeRTOS

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