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| author | Ammar Faizi <ammarfaizi2@gnuweeb.org> | 2022-05-20 00:21:15 +0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-06-20 09:43:19 -0700 |
| commit | 1ef150cf40be986747c3fa0c0e75acaec412e85e (patch) | |
| tree | eee44a321c25690a92ca6c8c16eac85957f2aabc /tools/include/nolibc/stdio.h | |
| parent | a111daf0c53ae91e71fd2bfe7497862d14132e3e (diff) | |
tools/nolibc/stdlib: Support overflow checking for older compiler versions
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>
Acked-by: Willy Tarreau <w@1wt.eu>
Reviewed-by: Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'tools/include/nolibc/stdio.h')
0 files changed, 0 insertions, 0 deletions