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[ARM] Add endless loop to avoid a compiler warning on noreturn functions.

From: Christophe Lyon <christophe dot lyon at linaro dot org>
To: newlib at sourceware dot org
Date: Mon, 1 Oct 2018 23:27:34 +0200
Subject: [ARM] Add endless loop to avoid a compiler warning on noreturn functions.

Hi,

While building newlib for ARM, I noticed GCC warnings for _exit() that
the compiler thinks they return a value despite being noreturn.

Like other targets, this small adds an endless loop to avoid the warning.

OK?

Christophe

Attachment: newlib-1.txt
Description: Text document

Follow-Ups:
- Re: [ARM] Add endless loop to avoid a compiler warning on noreturn functions.
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