2.3 Library heap usage requirements of microlib

Library heap usage requirements for microlib differ to those of standardlib.

The differences are:

  • The size of heap memory allocated for fopen() is 20 bytes for the FILE structure.

  • No buffer is ever allocated.

You must not declare main() to take arguments if you are using microlib.

Note:

The size of heap memory allocated for fopen() might change in future releases.

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