Swift and Stack smashing protection

Question

How to enable Stack Smashing Protection in pure swift application?

I did try to put \"-fstack-protector-all\" flag to Other C++ Flags under project build settings t

Answer 1

In Swift, Stack smashing is enabled by default one only need to add the "-fstack-protector-all" flag under build settings in objective-c applications.

How to check if stack smashing is enabled. Run the otool command and presence of stack_chk_guard and stack_chk_fail means the code is stack smashing protected.

$ otool -Iv |grep stack
0x0013dfg   520 ___stack_chk_fail
0x001d009   521 ___stack_chk_guard
0x001fd345   520 ___stack_chk_fail
0x000000010087efd   513 ___stack_chk_fail
0x0000000100098hf3 514 ___stack_chk_guard
0x00000001000897gfr   513 ___stack_chk_fail