demo of driving MAX2719 dot matrix displays with STM32F103 Bluepill
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f103-dotmatrix/project/malloc_safe.h

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#ifndef MALLOC_SAFE_H
#define MALLOC_SAFE_H
/**
* Malloc that prints error and restarts the system on failure.
*/
#include <stdlib.h>
#include <stdint.h>
void *malloc_safe_do(size_t size, const char* file, uint32_t line);
void *calloc_safe_do(size_t nmemb, size_t size, const char* file, uint32_t line);
#define malloc_s(size) malloc_safe_do(size, __FILE__, __LINE__)
#define calloc_s(nmemb, size) calloc_safe_do(nmemb, size, __FILE__, __LINE__)
#endif // MALLOC_SAFE_H