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https://www.reddit.com/r/ProgrammerHumor/comments/1w2m4qz/bugintroduceddebugging/p6ugqh2/?context=9999
r/ProgrammerHumor • u/ClipboardCopyPaste • 2d ago
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341
Is the mistake that they're allocating 1 byte and storing in a pointer to an int which is 4 bytes?
156 u/atanasius 2d ago It's allowed to assign to a pointer if it's not dereferenced. Malloc always returns a valid pointer. 24 u/EntitledPotatoe 2d ago Malloc can return a null pointer if the operation fails. This can be the case if, afaik, for example, there is no more heap available and the OS is not capable of swapping or freeing some other memory for some reason 17 u/atanasius 2d ago A null pointer is still valid to assign to a variable. 3 u/EntitledPotatoe 2d ago Very true, I thought you meant valid as in usable
156
It's allowed to assign to a pointer if it's not dereferenced. Malloc always returns a valid pointer.
24 u/EntitledPotatoe 2d ago Malloc can return a null pointer if the operation fails. This can be the case if, afaik, for example, there is no more heap available and the OS is not capable of swapping or freeing some other memory for some reason 17 u/atanasius 2d ago A null pointer is still valid to assign to a variable. 3 u/EntitledPotatoe 2d ago Very true, I thought you meant valid as in usable
24
Malloc can return a null pointer if the operation fails. This can be the case if, afaik, for example, there is no more heap available and the OS is not capable of swapping or freeing some other memory for some reason
17 u/atanasius 2d ago A null pointer is still valid to assign to a variable. 3 u/EntitledPotatoe 2d ago Very true, I thought you meant valid as in usable
17
A null pointer is still valid to assign to a variable.
3 u/EntitledPotatoe 2d ago Very true, I thought you meant valid as in usable
3
Very true, I thought you meant valid as in usable
341
u/AdBrave2400 2d ago
Is the mistake that they're allocating 1 byte and storing in a pointer to an int which is 4 bytes?