Strange behavior about WEXITSTATUS with `G++ 4.9.4`...

Wrong exit code received from wexitstatus...

waitpid/wexitstatus returning 0 instead of correct return code...

status value in wait function and wexitstatus...

Parsing WEXITSTATUS int-summed return code(s) in C via bitwise operation...

WEXITSTATUS(childStatus) returns 0 but waitpid returns -1...