On 21/01/2023 5:33 a.m., Holger Hoefling wrote:
Hi,
thanks for the tip! Is that available everywhere or do I need to set
compiler requirements?
You shouldn't need any special requirements. I think this was
standardized in C99, which is supported by default in R. Not sure which
C++ version adopted it, but it's available there too.
Duncan Murdoch
Best
Holger Hoefling
On Sat, Jan 21, 2023 at 11:27 AM Duncan Murdoch
<murdoch.dun...@gmail.com <mailto:murdoch.dun...@gmail.com>> wrote:
On 21/01/2023 5:15 a.m., Holger Hoefling wrote:
> Hi,
>
> In my recent re-submission with a bug-fix of the hdf5r package, I
got a new
> set of warnings from the compiler, one being that I shouldn't be
using
> 'sprintf'.
>
> Is there a simple replacement that I can use?
You should use snprintf() which has an extra argument to state the size
of the buffer receiving the string. For example,
char text[32];
sprintf(text, "%.4g", value);
could be written as
char text[32];
snprintf(text, 32, "%.4g", value);
This will write a string with at most 31 characters before the NUL at
the end, and avoids the possibility of a buffer overrun.
Duncan Murdoch
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