[glibc] Omit regex.c pragmas no longer needed

[glibc] Omit regex.c pragmas no longer needed

[Paul Eggert]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=540b740c8a23480d6360a437c9f8b5949f05e9fe

commit 540b740c8a23480d6360a437c9f8b5949f05e9fe
Author: Paul Eggert <eggert@cs.ucla.edu>
Date:   Mon Jan 1 10:40:37 2024 -0800

    Omit regex.c pragmas no longer needed
    
    * posix/regex.c: [!_LIBC && __GNUC_PREREQ (4, 3)]:
    Omit GCC pragmas no longer needed when this file is used as part of Gnulib.
    -Wold-style-definition no longer needs to be ignored because the regex
    code no longer uses old style definitions.  -Wtype-limits no longer
    needs to be ignored because Gnulib already arranges for it to be
    ignored in the C compiler flags.  This patch is taken from Gnulib.

Diff:
---
 posix/regex.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/posix/regex.c b/posix/regex.c
index 08031cecc0..4b1a6ed68e 100644
--- a/posix/regex.c
+++ b/posix/regex.c
@@ -26,10 +26,6 @@
 #  pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
 #  pragma GCC diagnostic ignored "-Wvla"
 # endif
-# if __GNUC_PREREQ (4, 3)
-#  pragma GCC diagnostic ignored "-Wold-style-definition"
-#  pragma GCC diagnostic ignored "-Wtype-limits"
-# endif
 #endif
 
 /* Make sure no one compiles this code with a C++ compiler.  */