[PATCH v2] stdio-common: Fix heap overflow in scanf %mc pattern

[Andreas Schwab]

On Mär 23 2026, Rocket Ma wrote:

> +  /* THIS TEST UNIT REQUIRE SOME HEAP LAYOUT! Which is related to
> +   current ptmalloc, when malloc is updated, this test may be inaccurate.
> +   Anyway, we should construct a case where we allocate a chunk just
> +   lower than scanf-alloced chunk to detect if heap overflow happens. */

Would that be caught by mcheck?

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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