test_read_matrix Illegal Memory Access

[Hareet]

SFU ID: hareetd

Github username: hareetd

Github: https://github.com/CMPT-295-SFU/assignment-3-hareetd

Line and file: Unsure about the line but file is either read_matrix or test_read_matrix

Expected behavior: Print matrix to screen

Observed behavior: See attached image

Question:

 When I run test_read_matrix it results in an illegal memory access. I've double-checked that im using the correct pointers returned by malloc and loading the rows/cols from them properly but I still can't figure out what's wrong.

[Hareet]

Edit: I stepped through the code and instead of an illegal access error I exit with error code 1 because fopen fails (file descriptor is returned as 0xFFFFFFFF). 

[Arrvindh Shriraman]

Your a1; number of rows is wrong when you call print_int_array

It is 20. It should be 3. Check your read_matrix and see whether you are reading the number of rows correctly and storing into that pointer

[Arrvindh Shriraman]

Check file path or whether you passed the file name correctly. Either way your issue is within read matrix not the file opening

[Hareet]

Thank you I figured it out. I was forgetting to multiply by sizeof(int) when passing number of bytes into malloc.