Re: malloc(0) returns a pointer, not NULL
On May 5, 2015, at 14:19, Michael David Crawford mdcrawf...@gmail.com wrote: This came as news to me. The C spec says this is implementation-definited; malloc(0 may return either NULL or it may return a pointer that can subsequently be passed to free(). Note that even when it does return NULL, that is still a “pointer that can subsequently be passed to free()” (i.e. free(NULL) is perfectly well-defined). In the case of the bug I'm looking at just now, it's an error in my code, so I now have: assert( 0 != bytes ); ptr = malloc( bytes ); Just thought you'd like to know, -- Clark Smith Cox III clark@apple.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: malloc(0) returns a pointer, not NULL
The Clang static analyzer will warn about potential calls to malloc(0). —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
malloc(0) returns a pointer, not NULL
This came as news to me. The C spec says this is implementation-definited; malloc(0 may return either NULL or it may return a pointer that can subsequently be passed to free(). In the case of the bug I'm looking at just now, it's an error in my code, so I now have: assert( 0 != bytes ); ptr = malloc( bytes ); Just thought you'd like to know, Mike Michael David Crawford, Consulting Software Engineer mdcrawf...@gmail.com http://www.warplife.com/mdc/ Available for Software Development in the Portland, Oregon Metropolitan Area. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
