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uclibc: add patch to fix <stdlib.h>

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This commit adds a patch to <stdlib.h>, to fix a bug introduced in
uClibc-ng 1.0.20, and which was causing build failures for at least one
package in Buildroot: freeswitch.

Fixes:

  http://autobuild.buildroot.net/results/12c246b058224f68494b84355a29dc4efb85df6d/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Thomas Petazzoni 2016-12-19 23:26:31 +01:00 committed by Peter Korsgaard
parent aa64e33c51
commit cafa98b797
1 changed files with 42 additions and 0 deletions
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42
package/uclibc/0007-sys-cdefs.h-add-definition-of-__attribute_alloc_size.patch Normal file
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@ -0,0 +1,42 @@
From dfcc950af1af003ee9e6fc985b5d6b3eb7d408af Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Mon, 19 Dec 2016 22:56:30 +0100
Subject: [PATCH] sys/cdefs.h: add definition of __attribute_alloc_size__
Commit cee0b058fa0b4501b289a2da365182d60314d746 ("add aligned_alloc
required for latest gcc libstdc++") added the prototype of
aligned_alloc() to <stdlib.h>. This prototype contains
'__attribute_alloc_size__ ((2))', but this is not defined anywhere in
uClibc-ng.
This commit addresses that by adding the relevant definition in
<sys/cdefs.h>, borrowed from glibc.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
include/sys/cdefs.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h
index f725ce9..6cd3811 100644
--- a/include/sys/cdefs.h
+++ b/include/sys/cdefs.h
@@ -222,6 +222,15 @@
# define __attribute_malloc__ /* Ignore */
#endif
+/* Tell the compiler which arguments to an allocation function
+ indicate the size of the allocation. */
+#if __GNUC_PREREQ (4, 3)
+# define __attribute_alloc_size__(params) \
+ __attribute__ ((__alloc_size__ params))
+#else
+# define __attribute_alloc_size__(params) /* Ignore. */
+#endif
+
/* At some point during the gcc 2.96 development the `pure' attribute
for functions was introduced. We don't want to use it unconditionally
(although this would be possible) since it generates warnings. */
--
2.7.4