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authorCarlos O'Donell <carlos@redhat.com>2016-06-02 23:30:11 -0400
committerCarlos O'Donell <carlos@redhat.com>2016-06-02 23:52:06 -0400
commit1c1e7fb65828c99d6e0f0f3857089b559a0c8189 (patch)
treeec54f58a6ecbbc2380b9f1e7a8d6b1ab21a7c235 /sysdeps/unix/sysv/linux/bits
parentf06f3f05b48c72e2c9b0fa78671f94fd22d67da8 (diff)
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Fix macro API for __USE_KERNEL_IPV6_DEFS.
The use of __USE_KERNEL_IPV6_DEFS with ifndef is bad
practice per: https://sourceware.org/glibc/wiki/Wundef.
This change moves it to use 'if' and always define the
macro.

Please note that this is not the only problem with this
code. I have a series of fixes after this one to resolve
breakage with this code and add regression tests for it
via compile-only source testing (to be discussed in another
thread).

Unfortunately __USE_KERNEL_XATTR_DEFS is set by the kernel
and not glibc, and uses 'define', so we can't fix that yet.
Diffstat (limited to 'sysdeps/unix/sysv/linux/bits')
-rw-r--r--sysdeps/unix/sysv/linux/bits/in.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/in.h b/sysdeps/unix/sysv/linux/bits/in.h
index d75c07b9fd..9bdadf3c8f 100644
--- a/sysdeps/unix/sysv/linux/bits/in.h
+++ b/sysdeps/unix/sysv/linux/bits/in.h
@@ -30,7 +30,9 @@
 /* This is not quite the same API since the kernel always defines s6_addr16 and
    s6_addr32. This is not a violation of POSIX since POSIX says "at least the
    following member" and that holds true.  */
-# define __USE_KERNEL_IPV6_DEFS
+# define __USE_KERNEL_IPV6_DEFS 1
+#else
+# define __USE_KERNEL_IPV6_DEFS 0
 #endif
 
 /* Options for use with `getsockopt' and `setsockopt' at the IP level.