When floats stops working

main.m

#import <Foundation/Foundation.h>
@implementation NSObject (Private)
- (float)doSomethng {
    return 42.0;
}
@end

int main(int argc, char * argv[]) {
    @autoreleasepool {
        NSObject * object = [NSObject new];
        for (int i = 0; i < 10; i++) {
            float value = [object doSomethng];
            printf("%f\n", value);
            [object performSelector:@selector(doSomethng) withObject:nil];
        }
        for (int i = 0; i < 10; i++) {
            NSLog(@"Fix");
            float value = [object doSomethng];
            printf("%f\n", value);
            [object performSelector:@selector(doSomethng) withObject:nil];
        }
    }
    return 0;
}

When running code above, you'll see that after some point, every value you expect from the method, will return NaN instead of 42
Then in next cycle, you'll realize that you can fix this behavior just by adding NSLog before calling method 🤷‍♂️
Works on iPhone5 simulator only (Actually on any 32-bit simulators)

Output:

42.000000
42.000000
42.000000
42.000000
42.000000
42.000000
42.000000
42.000000
nan         <-----
nan         <-----
1901-12-13 22:47:56.-2147483648 FixedByNSLog[34050:54261102] Fix
42.000000   <-----
1901-12-13 22:47:56.-2147483648 FixedByNSLog[34050:54261102] Fix
42.000000
1901-12-13 22:47:56.-2147483648 FixedByNSLog[34050:54261102] Fix
42.000000
1901-12-13 22:47:56.-2147483648 FixedByNSLog[34050:54261102] Fix
42.000000
1901-12-13 22:47:56.-2147483648 FixedByNSLog[34050:54261102] Fix
42.000000
1901-12-13 22:47:56.-2147483648 FixedByNSLog[34050:54261102] Fix
42.000000
1901-12-13 22:47:56.-2147483648 FixedByNSLog[34050:54261102] Fix
42.000000
1901-12-13 22:47:56.-2147483648 FixedByNSLog[34050:54261102] Fix
42.000000
1901-12-13 22:47:56.-2147483648 FixedByNSLog[34050:54261102] Fix
42.000000
1901-12-13 22:47:56.-2147483648 FixedByNSLog[34050:54261102] Fix
42.000000