From: "jeremyevans0 (Jeremy Evans)" <noreply@ruby-lang.org>
To: ruby-core@ruby-lang.org
Subject: [ruby-core:105631] [Ruby master Bug#18076] ext/digest/md5/md5.c: `-Wnull-pointer-subtraction` warning by Clang 13
Date: Wed, 13 Oct 2021 15:42:52 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-94121.20211013154251.48178@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-18076.20210816084246.48178@ruby-lang.org
Issue #18076 has been updated by jeremyevans0 (Jeremy Evans).
I submitted a pull request upstream to fix this: https://github.com/ruby/digest/pull/29
----------------------------------------
Bug #18076: ext/digest/md5/md5.c: `-Wnull-pointer-subtraction` warning by Clang 13
https://bugs.ruby-lang.org/issues/18076#change-94121
* Author: xtkoba (Tee KOBAYASHI)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.1.0dev (2021-08-16T00:07:09Z master 4cc44bd819) [x86_64-linux]
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
```
compiling ../../../../ext/digest/md5/md5.c
../../../../ext/digest/md5/md5.c:228:17: warning: performing pointer subtraction with a null pointer has undefined behavior [-Wnull-pointer-subtraction]
if (!((data - (const uint8_t *)0) & 3)) {
^ ~~~~~~~~~~~~~~~~~~
1 warning generated.
```
--
https://bugs.ruby-lang.org/
prev parent reply other threads:[~2021-10-13 15:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-16 8:43 [ruby-core:104925] [Ruby master Bug#18076] ext/digest/md5/md5.c: `-Wnull-pointer-subtraction` warning by Clang 13 xtkoba (Tee KOBAYASHI)
2021-08-17 17:39 ` [ruby-core:104957] " xtkoba (Tee KOBAYASHI)
2021-10-13 15:42 ` jeremyevans0 (Jeremy Evans) [this message]
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