Re: cc1plus: note: source object is likely at address zero

Arsen Arsenović via Gcc-help <[email protected]> Thu, 05 Mar 2026 14:31:24 +0100

Newsgroups	gmane.comp.gcc.help
Message-ID	<[email protected]>

Jonny Grant <[email protected]> writes:

> Is there a way to make these "notes" appear as warnings? That can then
> be upgraded to errors by -Werror
> [...]
> <source>: In function 'int main()':
> <source>:18:11: warning: 'int __builtin_puts(const char*)' reading 1 or more bytes from a region of size 0 [-Wstringop-overread]

^ That part is the actual warning, so you want
-Werror=stringop-overread.

The note is just added context for the warning (as per the usual - notes
serve to specify more info about diagnostics).
-- 
Arsen Arsenović

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