3 ms·
It's only likely, but not certain that a or b get overwritten. How your stack is laid out is entirely up to the compiler. arr[1] is already out of bounds, howev
by Kenji 12y ago
It's only likely, but not certain that a or b get overwritten. How your stack is laid out is entirely up to the compiler. arr[1] is already out of bounds, however, we don't know for certain what's immediately above the array.
- codeflo 12y agoWith compiler optimizations turned on, it's almost guaranteed not to happen, because a and b are very likely to be stored in CPU registers.
- mgraczyk 12y agoOr rather, a and b will be constant folded so that the printf call is optimized to "push #4; push ptrFmt; call printf"
- Someone 12y agoA truly good compiler would replace that printf by a call to putchar or pass a constant string to 'write' (gcc almost (?) does that. See http://www.ciselant.de/projects/gcc_printf/gcc_printf.html http://www.ciselant.de/projects/gcc_printf/gcc_printf.html)