Дана 24/04/07 10:11AM, Stuart Henderson написа: > Yes. It's very common though, especially when constructing strings for > debug logging. I see this a lot with software in the GNOME ecosystem > using sprintf for this.
Programmers who pass NULL to %s format specifier are writing incorrect code, whatever project they are contributing to. Mainstream projects like GNOME are a mess, and only getting worse with every iteration anyway. > That's interesting about the compiler optimisation for printf->puts, > though I think it won't be used in many cases where the pointer nay be > null so many uses of this won't trigger crashes for that reason. Keep in mind the quoted answer states this about gcc. I'm not sure about Clang/LLVM. In any case, passing NULL to %s specifier in *printf is incorrect code.
