[glibc] associate a deallocator for iconv_open

[Siddhesh Poyarekar <siddhesh@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=260a430dd841072020c4dae91468322e619e7330

commit 260a430dd841072020c4dae91468322e619e7330
Author: Steve Grubb <sgrubb@redhat.com>
Date:   Fri Mar 11 17:04:46 2022 -0500

    associate a deallocator for iconv_open
    
    This patch associates iconv_close as a deallocator for iconv_open. This
    required moving the iconv_close declaration above iconv_open.
    
    Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

Diff:
---
 iconv/iconv.h | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/iconv/iconv.h b/iconv/iconv.h
index aa936a350f..544425d4dc 100644
--- a/iconv/iconv.h
+++ b/iconv/iconv.h
@@ -29,12 +29,19 @@ __BEGIN_DECLS
 typedef void *iconv_t;
 
 
+/* Free resources allocated for descriptor CD for code conversion.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern int iconv_close (iconv_t __cd);
+
 /* Allocate descriptor for code conversion from codeset FROMCODE to
    codeset TOCODE.
 
    This function is a possible cancellation point and therefore not
    marked with __THROW.  */
-extern iconv_t iconv_open (const char *__tocode, const char *__fromcode);
+extern iconv_t iconv_open (const char *__tocode, const char *__fromcode)
+	__attribute_malloc__ __attr_dealloc (iconv_close, 1);
 
 /* Convert at most *INBYTESLEFT bytes from *INBUF according to the
    code conversion algorithm specified by CD and place up to
@@ -44,12 +51,6 @@ extern size_t iconv (iconv_t __cd, char **__restrict __inbuf,
 		     char **__restrict __outbuf,
 		     size_t *__restrict __outbytesleft);
 
-/* Free resources allocated for descriptor CD for code conversion.
-
-   This function is a possible cancellation point and therefore not
-   marked with __THROW.  */
-extern int iconv_close (iconv_t __cd);
-
 __END_DECLS
 
 #endif /* iconv.h */