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build: fix compatibility with old compilers

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GCC 4.2 dies with

    src/InadequacyList.c: In function 'InadequacyList__new_conflict':
    src/InadequacyList.c:37: error: #pragma GCC diagnostic not allowed inside functions
    src/InadequacyList.c:37: error: #pragma GCC diagnostic not allowed inside functions
    src/InadequacyList.c:40: error: #pragma GCC diagnostic not allowed inside functions

Reported by Evan Lavelle.
See https://lists.gnu.org/r/bug-bison/2020-03/msg00021.html
and https://trac.macports.org/ticket/59927.

* src/system.h (GCC_VERSION): New.
Use it to control IGNORE_TYPE_LIMITS_BEGIN and
IGNORE_TYPE_LIMITS_END.
This commit is contained in:
Akim Demaille
2020-04-02 07:09:27 +02:00
parent e3e21cc0d8
commit 6e89bc0fd2
2 changed files with 8 additions and 2 deletions
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1
THANKS
View File

@@ -61,6 +61,7 @@ Enrico Scholz enrico.scholz@informatik.tu-chemnitz.de
Eric Blake ebb9@byu.net
Eric S. Raymond esr@thyrsus.com
Étienne Renault renault@lrde.epita.fr
Evan Lavelle eml-bison@cyconix.com
Evan Nemerson evan@nemerson.com
Evgeny Stambulchik fnevgeny@plasma-gate.weizmann.ac.il
Fabrice Bauzac noon@cote-dazur.com

9
src/system.h
View File

@@ -73,9 +73,14 @@ typedef size_t uintptr_t;
# include <verify.h>
# include <xalloc.h>
// Clang and ICC like to pretend they are GCC.
#if defined __GNUC__ && !defined __clang__ && !defined __ICC
# define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
#endif
/* See https://lists.gnu.org/archive/html/bug-bison/2019-10/msg00061.html. */
# if defined __GNUC__ && ! defined __clang__ && ! defined __ICC && __GNUC__ < 5
// See https://lists.gnu.org/archive/html/bug-bison/2019-10/msg00061.html
// and https://trac.macports.org/ticket/59927.
#if defined GCC_VERSION && 405 <= GCC_VERSION
# define IGNORE_TYPE_LIMITS_BEGIN \
_Pragma ("GCC diagnostic push") \
_Pragma ("GCC diagnostic ignored \"-Wtype-limits\"")