libio: Use NULL instead of 0 as a null pointer constant

This was missed in a recent global change.

Fixes: 53fcdf5f743a (2024-11-25, "Silence most -Wzero-as-null-pointer-constant diagnostics")
Reported-by: "Maciej W. Rozycki" <macro@redhat.com>
Cc: Siddhesh Poyarekar <siddhesh@sourceware.org>
Cc: Bruno Haible <bruno@clisp.org>
Cc: Martin Uecker <uecker@tugraz.at>
Cc: Xi Ruoyao <xry111@xry111.site>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Joseph Myers <josmyers@redhat.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Reviewed-by: Maciej W. Rozycki <macro@redhat.com>

diff --git a/libio/libioP.h b/libio/libioP.h
index 34bf91fcd89718bc0e6469875869d1459edd9545..70e2bdfc9df426ca2cc99be0210ce81f71946f0b 100644 (file)
--- a/libio/libioP.h
+++ b/libio/libioP.h
@@ -910,7 +910,8 @@ extern int _IO_vscanf (const char *, va_list) __THROW;
 # ifdef _IO_USE_OLD_IO_FILE
 #  define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
        { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (FILE *) CHAIN, FD, \
+        NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, \
+        NULL, NULL, (FILE *) CHAIN, FD, \
         0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock }
 # else
 #  define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
@@ -924,14 +925,16 @@ extern int _IO_vscanf (const char *, va_list) __THROW;
 # ifdef _IO_USE_OLD_IO_FILE
 #  define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
        { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (FILE *) CHAIN, FD, \
+        NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, \
+        NULL, NULL, (FILE *) CHAIN, FD, \
         0, _IO_pos_BAD }
 # else
 #  define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
        { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (FILE *) CHAIN, FD, \
+        NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, \
+        NULL, NULL, (FILE *) CHAIN, FD, \
         0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
-        NULL, WDP, 0 }
+        NULL, WDP, NULL }
 # endif
 #endif