From: Paul Eggert <eggert@cs.ucla.edu>
To: bug-gnulib@gnu.org
Cc: Paul Eggert <eggert@cs.ucla.edu>
Subject: [PATCH 4/6] gnulib-common: update for gcc -Wmismatched-dealloc
Date: Sat, 31 Jul 2021 12:01:21 -0700 [thread overview]
Message-ID: <20210731190124.279622-4-eggert@cs.ucla.edu> (raw)
In-Reply-To: <20210731190124.279622-1-eggert@cs.ucla.edu>
* m4/gnulib-common.m4 (gl_COMMON_BODY): Define the macros
_GL_ATTRIBUTE_DEALLOC and _GL_ATTRIBUTE_DEALLOC_FREE. These can
be useful with gcc -Wmismatched-dealloc.
---
ChangeLog | 5 +++++
m4/gnulib-common.m4 | 12 ++++++++++++
2 files changed, 17 insertions(+)
diff --git a/ChangeLog b/ChangeLog
index 7e388c4dd..33a472f5e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
2021-07-30 Paul Eggert <eggert@cs.ucla.edu>
+ gnulib-common: update for gcc -Wmismatched-dealloc
+ * m4/gnulib-common.m4 (gl_COMMON_BODY): Define the macros
+ _GL_ATTRIBUTE_DEALLOC and _GL_ATTRIBUTE_DEALLOC_FREE. These can
+ be useful with gcc -Wmismatched-dealloc.
+
gnulib-common: update for C2x 2020-12-11 draft
Use blessed-by-draft-standard way to test for [[__deprecated__]]
etc.; this is supported by GCC 11 and the fallback code should
diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
index 347462d1d..2872ecdf7 100644
--- a/m4/gnulib-common.m4
+++ b/m4/gnulib-common.m4
@@ -148,6 +148,18 @@ AC_DEFUN([gl_COMMON_BODY], [
# define _GL_ATTRIBUTE_CONST
#endif
+/* _GL_ATTRIBUTE_DEALLOC (F, I) is for functions returning pointers
+ that can be freed by passing them as the Ith argument to the
+ function F. _GL_ATTRIBUTE_DEALLOC_FREE is for functions that
+ return pointers that can be freed via 'free'; it can be used
+ only after including stdlib.h. */
+#if _GL_GNUC_PREREQ (11, 0)
+# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i)))
+#else
+# define _GL_ATTRIBUTE_DEALLOC(f, i)
+#endif
+#define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1)
+
#if _GL_HAS_C_ATTRIBUTE (deprecated)
# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]]
#elif _GL_HAS_ATTRIBUTE (deprecated)
--
2.31.1
next prev parent reply other threads:[~2021-07-31 19:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-31 19:01 [PATCH 1/6] limits-h: add BOOL_MAX, BOOL_WIDTH Paul Eggert
2021-07-31 19:01 ` [PATCH 2/6] manywarnings: document GCC 11 warnings Paul Eggert
2021-07-31 19:01 ` [PATCH 3/6] gnulib-common: update for C2x 2020-12-11 draft Paul Eggert
2021-07-31 19:01 ` Paul Eggert [this message]
2021-07-31 19:01 ` [PATCH 5/6] xalloc: add malloc-related function attributes Paul Eggert
2021-07-31 19:01 ` [PATCH 6/6] doc: C2X -> C2x Paul Eggert
2021-08-01 13:38 ` [PATCH 1/6] limits-h: add BOOL_MAX, BOOL_WIDTH Bruno Haible
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