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* [PATCH v1 0/2] nolibc updates for Linux 5.20
@ 2022-05-19 17:21 Ammar Faizi
  2022-05-19 17:21 ` [PATCH v1 1/2] tools/nolibc/stdlib: Support overflow checking for older compiler versions Ammar Faizi
                   ` (2 more replies)
  0 siblings, 3 replies; 8+ messages in thread
From: Ammar Faizi @ 2022-05-19 17:21 UTC (permalink / raw)
  To: Paul E. McKenney, Willy Tarreau
  Cc: Ammar Faizi, Alviro Iskandar Setiawan, Linux Kernel Mailing List,
	GNU/Weeb Mailing List, Facebook Kernel Team


Hi Willy,
Hi Paul,

Not much to do this time. Only small nolibc updates here. There are two
patches in this series.

1. Address Willy's comment about overflow checking in the multiplication
   operation [1]. This patch supports overflow checking for older
   compiler versions. Currently, we use `__builtin_mul_overflow()` that
   doesn't exist in older compiler versions. Instead of using this
   built-in, use a simple division to check for overflow in the `calloc()`
   function.

2. The compiler can warn us about wrong `printf` arguments. This patch
   enables the warnings. Currently, only two functions use this attribute:
   `printf` and `fprintf`.

Hopefully, I can send more updates for 5.21+.

Thank you!

Link: https://lore.kernel.org/lkml/[email protected] [1]
Signed-off-by: Alviro Iskandar Setiawan <[email protected]>
Signed-off-by: Ammar Faizi <[email protected]>
---

Alviro Iskandar Setiawan (1):
  tools/nolibc/stdio: Add format attribute to enable printf warnings

Ammar Faizi (1):
  tools/nolibc/stdlib: Support overflow checking for older compiler versions

 tools/include/nolibc/stdio.h  | 4 ++--
 tools/include/nolibc/stdlib.h | 7 +++----
 2 files changed, 5 insertions(+), 6 deletions(-)


base-commit: 9a9e459ed0e76710f1258b6c1d4c0316b52b4b08
prerequisite-patch-id: e4a9acdc12961f2d4c6bb99e4790b8ffa9d15174
prerequisite-patch-id: 5a618e6a72c7d2beef4ba2c2cf01dadfbaf9a996
prerequisite-patch-id: 1bcffd448f6984eee80d86560af19672cd4ae716
prerequisite-patch-id: 3e31c80bd4dd532e30b4bba76e5d98647e21184b
prerequisite-patch-id: 34e531967a67791d5b3c3e071527de7235715906
prerequisite-patch-id: 14105c6ae9dcc068ddf12a7c1bf431066199b813
prerequisite-patch-id: 4299173943ea579f538da00488fb1a7b1a690a79
prerequisite-patch-id: dd85164f2ec9eb8cea64ab801abac614f9d0c8f5
prerequisite-patch-id: 2c1b940635d1564e26b9959eb57cf9fa6983cb2f
-- 
Ammar Faizi


^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2022-05-20 17:32 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-05-19 17:21 [PATCH v1 0/2] nolibc updates for Linux 5.20 Ammar Faizi
2022-05-19 17:21 ` [PATCH v1 1/2] tools/nolibc/stdlib: Support overflow checking for older compiler versions Ammar Faizi
2022-05-20  4:19   ` Willy Tarreau
2022-05-20 11:29   ` Alviro Iskandar Setiawan
2022-05-20 17:32     ` Paul E. McKenney
2022-05-19 17:21 ` [PATCH v1 2/2] tools/nolibc/stdio: Add format attribute to enable printf warnings Ammar Faizi
2022-05-20  4:21   ` Willy Tarreau
2022-05-20  4:23 ` [PATCH v1 0/2] nolibc updates for Linux 5.20 Willy Tarreau

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