Messages in this thread | | | From | Alviro Iskandar Setiawan <> | Date | Fri, 20 May 2022 18:29:56 +0700 | Subject | Re: [PATCH v1 1/2] tools/nolibc/stdlib: Support overflow checking for older compiler versions |
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On Fri, May 20, 2022 at 12:21 AM Ammar Faizi <ammarfaizi2@gnuweeb.org> wrote: > Previously, we used __builtin_mul_overflow() to check for overflow in > the multiplication operation in the calloc() function. However, older > compiler versions don't support this built-in. This patch changes the > overflow checking mechanism to make it work on any compiler version > by using a division method to check for overflow. No functional change > intended. While in there, remove the unused variable `void *orig`. > > Link: https://lore.kernel.org/lkml/20220330024114.GA18892@1wt.eu > Suggested-by: Willy Tarreau <w@1wt.eu> > Cc: Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org> > Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Reviewed-by: Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org>
tq
-- Viro
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