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From: Pavel M <pavel.morozkin@gmail.com>
To: newlib@sourceware.org
Subject: Issue: headers may use non-reserved identifiers
Date: Wed, 20 Apr 2022 23:35:57 +0300	[thread overview]
Message-ID: <CAL9Mx1vqcV_cgn3+CnT1RgO4wH3iK1No6qOCThXjaKrJns2h_g@mail.gmail.com> (raw)

Hi all,

Issue: headers may use non-reserved identifiers.

Example:
#define _reent 0
#include <stdio.h>

$ gcc t567.c -std=c11
t567.c:1:16: error: expected ‘{’ before numeric constant
    1 | #define _reent 0
      |                ^
t567.c:1:16: error: expected ‘{’ before numeric constant
    1 | #define _reent 0
      |                ^
and so on...

Per C11 _reent, _on_exit_args, etc. are non-reserved identifiers.

Consider fixing.

P.S. Good if it leads to compile time errors, not good if it doesn't (wrong
translation unit produced => wrong code generated => wrong runtime
behavior).

--
Pavel

             reply	other threads:[~2022-04-20 20:36 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-20 20:35 Pavel M [this message]
     [not found] ` <BN2P110MB1544D7B44A9377983D6ADC2C9AF59@BN2P110MB1544.NAMP110.PROD.OUTLOOK.COM>
2022-04-20 22:11   ` Fw: " C Howland
2022-04-21  2:48     ` Richard Damon
2022-04-21  4:56       ` Brian Inglis

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