http://icculus.org/pipermail/physfs/2018-March/001255.html
--- src/physfs_platform_apple.m.old 2018-03-20 11:30:49.000000000 -0600
+++ src/physfs_platform_apple.m 2018-03-20 11:31:12.000000000 -0600
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, TRUE);
BAIL_IF(!paths, PHYSFS_ERR_OS_ERROR, NULL);
- NSString *path = (NSString *) paths[0];
+ NSString *path = (NSString *) [paths objectAtIndex:0];
BAIL_IF(!path, PHYSFS_ERR_OS_ERROR, NULL);
size_t len = [path lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
const size_t applen = strlen(app);