Re: [platform-testers] texinfo-6.6.90 pretest

[Bruno Haible]

Eli Zaretskii wrote:
> One other issue is that GCC 8 flags many uses of strncat in
> install-info.c as unsafe:
> 
>      install-info.c: In function 'split_entry':
>      install-info.c:1624:17: warning: 'strncat' specified bound 2 equals 
> source length [-Wstringop-overflow=]
>                       strncat (*description, "  ", 2);
>                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 

The warnings are clearly pointless, because the amount of memory
allocated for *description is unknown to the compiler.

Which GCC options did you specify?

The GCC documentation [1] explains that -Wstringop-overflow=3 and
-Wstringop-overflow=4 "may result in warnings for safe code".

Bruno

[1] https://gcc.gnu.org/onlinedocs/gcc-8.3.0/gcc/Warning-Options.html