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Altera_Forum
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21 years ago

malloc( )problem

Hello : data_written = (unsigned char *)malloc(0x1000); num=sizeof(data_written); The size of data_written should be 0x1000,But use the function sizeof,the num is 4 . I hav...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

You've missed out part of the code. Presumably the full code is: 

unsigned char * data_written;
data_written = (unsigned char *)malloc(0x1000);
num=sizeof(data_written);

So data_written is a pointer, and pointers are 32 bits on Nios II - four times the size of a char. So sizeof is returning the correct value.