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From: "lbr-dev at yandex dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/99499] build failure for android bionic toolchains.
 error: '_U' was not declared in this scope
Date: Sun, 19 Feb 2023 23:11:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99499

DEV LBR <lbr-dev at yandex dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lbr-dev at yandex dot com

--- Comment #10 from DEV LBR <lbr-dev at yandex dot com> ---
(In reply to Jonathan Wakely from comment #2)
> Obviously _U worked at some point when that file was added. CCing Maxim to
> figure out what changed and whether we want to support the old ctype
> constants as well as whatever Android defines now.

With regard to this bug, I think you can directly use the official patch of
Android NDK (see
https://android.googlesource.com/toolchain/gcc/+/44ea170a62f4bb566c5487c446=
a31300d1e0e319%5E%21/).=