Re: How to print or check if a string is "\0" (null) terminated in the D programming language?
On Wednesday, 6 April 2022 at 08:55:43 UTC, BoQsc wrote: I have a feeling that some parts of my code contains unterminated strings and they do overflow into other string [...] If you suspect overflow, you can try string wrapping.
Re: How to print or check if a string is "\0" (null) terminated in the D programming language?
On Wednesday, 6 April 2022 at 08:55:43 UTC, BoQsc wrote: I have a feeling that some parts of my code contains unterminated strings and they do overflow into other string that is to be combined. I'd like to take a look at strings, analyse them manually and see if any of them end up terminated or not. Please provide any relevant examples of how you do this. In general, you shouldn't do that. In D, a `string`, `wstring` and `dstring` are slices of corresponding character types, and are *not* null-terminated (and in fact can contain 0 within their representation). However, as Andrea Fontana points out, string literals are null-terminated (but note that the terminator itself isn't included in a `string` initialized with such a literal), and also convert to pointers - these two properties allow using them as arguments to C functions. Thus, since null terminator isn't normally included as part of a string, you'd have to read past array bounds to check if there's a 0 there, and doing so leads to undefined behavior. In fact, you should simply assume that any D string you encounter is not null-terminated. And if you want to ensure you're always passing around null-terminated strings, you should either use the greedy allocating functions such as `toStringz`, or perhaps make your own type that always allocates extra space for a 0.
Re: How to print or check if a string is "\0" (null) terminated in the D programming language?
On Wednesday, 6 April 2022 at 08:55:43 UTC, BoQsc wrote: I have a feeling that some parts of my code contains unterminated strings and they do overflow into other string that is to be combined. I'd like to take a look at strings, analyse them manually and see if any of them end up terminated or not. Please provide any relevant examples of how you do this. string literals are zero-terminated in d. If you need to pass a D string to a C function use toStringz() https://dlang.org/library/std/string/to_stringz.html
How to print or check if a string is "\0" (null) terminated in the D programming language?
I have a feeling that some parts of my code contains unterminated strings and they do overflow into other string that is to be combined. I'd like to take a look at strings, analyse them manually and see if any of them end up terminated or not. Please provide any relevant examples of how you do this.
