* bug#18711: Numerous unknown attribute '__alloc_size__' warnings when using clang
@ 2014-10-13 20:56 William S Fulton
2014-10-14 3:53 ` Mark H Weaver
0 siblings, 1 reply; 6+ messages in thread
From: William S Fulton @ 2014-10-13 20:56 UTC (permalink / raw)
To: 18711
A simple
#include <libguile.h>
generates the numerous warnings given below:
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:411:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:413:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:418:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:420:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:424:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(2) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:487:46: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
/* 'realloc' attr */ GC_ATTR_ALLOC_SIZE(2);
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:742:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:744:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:757:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:759:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:764:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:766:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:773:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:776:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:778:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:781:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:787:46: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
/* 'realloc' attr */ GC_ATTR_ALLOC_SIZE(2);
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:804:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
In file included from example_wrap.c:702:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:806:29: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
GC_API /* 'realloc' attr */ GC_ATTR_ALLOC_SIZE(2) void * GC_CALL
^
/usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
^
19 warnings generated.
System information:
$ guile --version | head -n 1
guile (GNU Guile) 2.0.11
$ clang --version
Apple LLVM version 6.0 (clang-600.0.51) (based on LLVM 3.5svn)
Target: x86_64-apple-darwin13.4.0
Thread model: posix
$ xcodebuild -version -sdk | head -n 2
MacOSX10.9.sdk - OS X 10.9 (macosx10.9)
SDKVersion: 10.9
$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.9.5
BuildVersion: 13F34
$ uname -a
Darwin itako16071.miso 13.4.0 Darwin Kernel Version 13.4.0: Sun Aug 17 19:50:11 PDT 2014; root:xnu-2422.115.4~1/RELEASE_X86_64 x86_64
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#18711: Numerous unknown attribute '__alloc_size__' warnings when using clang
2014-10-13 20:56 bug#18711: Numerous unknown attribute '__alloc_size__' warnings when using clang William S Fulton
@ 2014-10-14 3:53 ` Mark H Weaver
2014-10-14 7:10 ` William S Fulton
2014-10-14 10:09 ` Ludovic Courtès
0 siblings, 2 replies; 6+ messages in thread
From: Mark H Weaver @ 2014-10-14 3:53 UTC (permalink / raw)
To: William S Fulton; +Cc: bdwgc, 18711
[Forwarding this bug report to bdwgc@lists.opendylan.org]
William S Fulton <wsf@fultondesigns.co.uk> writes:
> A simple
>
> #include <libguile.h>
>
> generates the numerous warnings given below:
>
>
> In file included from example_wrap.c:702:
> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
> /usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:411:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
> GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
> ^
> /usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
> # define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
> ^
This is clearly an issue with bdwgc on clang, and possibly only on
Apple's version of clang. Here's the relevant section of
gc/gc_config_macros.h from bdwgc 7.4.2:
--8<---------------cut here---------------start------------->8---
#ifndef GC_ATTR_ALLOC_SIZE
/* 'alloc_size' attribute improves __builtin_object_size correctness. */
/* Only single-argument form of 'alloc_size' attribute is used. */
# if defined(__GNUC__) && (__GNUC__ > 4 \
|| (__GNUC__ == 4 && __GNUC_MINOR__ >= 3 && !defined(__ICC)) \
|| __clang_major__ > 3 \
|| (__clang_major__ == 3 && __clang_minor__ >= 2))
# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
# else
# define GC_ATTR_ALLOC_SIZE(argnum)
# endif
#endif
--8<---------------cut here---------------end--------------->8---
You can see that the bdwgc developers have made an effort to check both
GCC and clang version numbers before using the __alloc_size__ attribute.
The code above seems to suggest that they believed clang 3.2 or later
supported this attribute, whereas your version of clang seems to be
based on upstream clang 3.5. Perhaps Apple removed support for this
attribute from their clang?
In any case, this needs to be taken up with the bdwgc developers.
Regards,
Mark
> System information:
>
> $ guile --version | head -n 1
> guile (GNU Guile) 2.0.11
>
> $ clang --version
> Apple LLVM version 6.0 (clang-600.0.51) (based on LLVM 3.5svn)
> Target: x86_64-apple-darwin13.4.0
> Thread model: posix
>
> $ xcodebuild -version -sdk | head -n 2
> MacOSX10.9.sdk - OS X 10.9 (macosx10.9)
> SDKVersion: 10.9
>
> $ sw_vers
> ProductName: Mac OS X
> ProductVersion: 10.9.5
> BuildVersion: 13F34
>
> $ uname -a
> Darwin itako16071.miso 13.4.0 Darwin Kernel Version 13.4.0: Sun Aug 17
> 19:50:11 PDT 2014; root:xnu-2422.115.4~1/RELEASE_X86_64 x86_64
^ permalink raw reply [flat|nested] 6+ messages in thread* bug#18711: Numerous unknown attribute '__alloc_size__' warnings when using clang
2014-10-14 3:53 ` Mark H Weaver
@ 2014-10-14 7:10 ` William S Fulton
2014-10-15 16:39 ` Mark H Weaver
2014-10-16 22:07 ` bug#18711: Re[2]: [Gc] " Ivan Maidanski
2014-10-14 10:09 ` Ludovic Courtès
1 sibling, 2 replies; 6+ messages in thread
From: William S Fulton @ 2014-10-14 7:10 UTC (permalink / raw)
To: Mark H Weaver; +Cc: bdwgc, 18711
Thanks for analysing and pointing in the right direction Mark. With this
info I found
https://github.com/ivmai/bdwgc/commit/8fc1f3b61b02320848b035ccccd59e04e77d3f6b#diff-b3f85dde7694cbd1268ea9ed20db1b1aR244
which looks like it fixes it in the next release of bdwgc (7.5).
Unfortunately this warning fails our tests as the build log is too big
(this warning leads to > 4GByte build logs as the header is used in
hundreds of our tests), so I'll suppress it some other way until 7.5 is
released.
William
On 14/10/14 04:53, Mark H Weaver wrote:
> [Forwarding this bug report to bdwgc@lists.opendylan.org]
>
> William S Fulton <wsf@fultondesigns.co.uk> writes:
>
>> A simple
>>
>> #include <libguile.h>
>>
>> generates the numerous warnings given below:
>>
>>
>> In file included from example_wrap.c:702:
>> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
>> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
>> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
>> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
>> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
>> /usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:411:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
>> GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
>> ^
>> /usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
>> # define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
>> ^
> This is clearly an issue with bdwgc on clang, and possibly only on
> Apple's version of clang. Here's the relevant section of
> gc/gc_config_macros.h from bdwgc 7.4.2:
>
> --8<---------------cut here---------------start------------->8---
> #ifndef GC_ATTR_ALLOC_SIZE
> /* 'alloc_size' attribute improves __builtin_object_size correctness. */
> /* Only single-argument form of 'alloc_size' attribute is used. */
> # if defined(__GNUC__) && (__GNUC__ > 4 \
> || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3 && !defined(__ICC)) \
> || __clang_major__ > 3 \
> || (__clang_major__ == 3 && __clang_minor__ >= 2))
> # define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
> # else
> # define GC_ATTR_ALLOC_SIZE(argnum)
> # endif
> #endif
> --8<---------------cut here---------------end--------------->8---
>
> You can see that the bdwgc developers have made an effort to check both
> GCC and clang version numbers before using the __alloc_size__ attribute.
> The code above seems to suggest that they believed clang 3.2 or later
> supported this attribute, whereas your version of clang seems to be
> based on upstream clang 3.5. Perhaps Apple removed support for this
> attribute from their clang?
>
> In any case, this needs to be taken up with the bdwgc developers.
>
> Regards,
> Mark
>
>
>> System information:
>>
>> $ guile --version | head -n 1
>> guile (GNU Guile) 2.0.11
>>
>> $ clang --version
>> Apple LLVM version 6.0 (clang-600.0.51) (based on LLVM 3.5svn)
>> Target: x86_64-apple-darwin13.4.0
>> Thread model: posix
>>
>> $ xcodebuild -version -sdk | head -n 2
>> MacOSX10.9.sdk - OS X 10.9 (macosx10.9)
>> SDKVersion: 10.9
>>
>> $ sw_vers
>> ProductName: Mac OS X
>> ProductVersion: 10.9.5
>> BuildVersion: 13F34
>>
>> $ uname -a
>> Darwin itako16071.miso 13.4.0 Darwin Kernel Version 13.4.0: Sun Aug 17
>> 19:50:11 PDT 2014; root:xnu-2422.115.4~1/RELEASE_X86_64 x86_64
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#18711: Numerous unknown attribute '__alloc_size__' warnings when using clang
2014-10-14 7:10 ` William S Fulton
@ 2014-10-15 16:39 ` Mark H Weaver
2014-10-16 22:07 ` bug#18711: Re[2]: [Gc] " Ivan Maidanski
1 sibling, 0 replies; 6+ messages in thread
From: Mark H Weaver @ 2014-10-15 16:39 UTC (permalink / raw)
To: William S Fulton; +Cc: 18711-done
William S Fulton <wsf@fultondesigns.co.uk> writes:
> Thanks for analysing and pointing in the right direction Mark. With
> this info I found
> https://github.com/ivmai/bdwgc/commit/8fc1f3b61b02320848b035ccccd59e04e77d3f6b#diff-b3f85dde7694cbd1268ea9ed20db1b1aR244
> which looks like it fixes it in the next release of bdwgc (7.5).
Thanks for letting us know. I'm closing this bug now.
Regards,
Mark
^ permalink raw reply [flat|nested] 6+ messages in thread* bug#18711: Re[2]: [Gc] bug#18711: Numerous unknown attribute '__alloc_size__' warnings when using clang
2014-10-14 7:10 ` William S Fulton
2014-10-15 16:39 ` Mark H Weaver
@ 2014-10-16 22:07 ` Ivan Maidanski
1 sibling, 0 replies; 6+ messages in thread
From: Ivan Maidanski @ 2014-10-16 22:07 UTC (permalink / raw)
To: William S Fulton; +Cc: bdwgc, 18711
[-- Attachment #1: Type: text/plain, Size: 4105 bytes --]
Hi William,
I merged the fix to master: https://github.com/ivmai/bdwgc/commit/b725923951d77f5c6792c2797f89179267c58c9c
Regards,
Ivan
Tue, 14 Oct 2014 08:10:45 +0100 from William S Fulton <wsf@fultondesigns.co.uk>:
>Thanks for analysing and pointing in the right direction Mark. With this
>info I found
>https://github.com/ivmai/bdwgc/commit/8fc1f3b61b02320848b035ccccd59e04e77d3f6b#diff-b3f85dde7694cbd1268ea9ed20db1b1aR244
>which looks like it fixes it in the next release of bdwgc (7.5).
>
>Unfortunately this warning fails our tests as the build log is too big
>(this warning leads to > 4GByte build logs as the header is used in
>hundreds of our tests), so I'll suppress it some other way until 7.5 is
>released.
>
>William
>
>On 14/10/14 04:53, Mark H Weaver wrote:
>> [Forwarding this bug report to bdwgc@lists.opendylan.org]
>>
>> William S Fulton < wsf@fultondesigns.co.uk > writes:
>>
>>> A simple
>>>
>>> #include <libguile.h>
>>>
>>> generates the numerous warnings given below:
>>>
>>>
>>> In file included from example_wrap.c:702:
>>> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile.h:37:
>>> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/async.h:28:
>>> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/threads.h:36:
>>> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/pthread-threads.h:33:
>>> In file included from /usr/local/Cellar/guile/2.0.11_1/include/guile/2.0/libguile/bdw-gc.h:47:
>>> /usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc.h:411:23: warning: unknown attribute '__alloc_size__' ignored [-Wattributes]
>>> GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
>>> ^
>>> /usr/local/Cellar/bdw-gc/7.4.2/include/gc/gc_config_macros.h:249:54: note: expanded from macro 'GC_ATTR_ALLOC_SIZE'
>>> # define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
>>> ^
>> This is clearly an issue with bdwgc on clang, and possibly only on
>> Apple's version of clang. Here's the relevant section of
>> gc/gc_config_macros.h from bdwgc 7.4.2:
>>
>> --8<---------------cut here---------------start------------->8---
>> #ifndef GC_ATTR_ALLOC_SIZE
>> /* 'alloc_size' attribute improves __builtin_object_size correctness. */
>> /* Only single-argument form of 'alloc_size' attribute is used. */
>> # if defined(__GNUC__) && (__GNUC__ > 4 \
>> || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3 && !defined(__ICC)) \
>> || __clang_major__ > 3 \
>> || (__clang_major__ == 3 && __clang_minor__ >= 2))
>> # define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
>> # else
>> # define GC_ATTR_ALLOC_SIZE(argnum)
>> # endif
>> #endif
>> --8<---------------cut here---------------end--------------->8---
>>
>> You can see that the bdwgc developers have made an effort to check both
>> GCC and clang version numbers before using the __alloc_size__ attribute.
>> The code above seems to suggest that they believed clang 3.2 or later
>> supported this attribute, whereas your version of clang seems to be
>> based on upstream clang 3.5. Perhaps Apple removed support for this
>> attribute from their clang?
>>
>> In any case, this needs to be taken up with the bdwgc developers.
>>
>> Regards,
>> Mark
>>
>>
>>> System information:
>>>
>>> $ guile --version | head -n 1
>>> guile (GNU Guile) 2.0.11
>>>
>>> $ clang --version
>>> Apple LLVM version 6.0 (clang-600.0.51) (based on LLVM 3.5svn)
>>> Target: x86_64-apple-darwin13.4.0
>>> Thread model: posix
>>>
>>> $ xcodebuild -version -sdk | head -n 2
>>> MacOSX10.9.sdk - OS X 10.9 (macosx10.9)
>>> SDKVersion: 10.9
>>>
>>> $ sw_vers
>>> ProductName: Mac OS X
>>> ProductVersion: 10.9.5
>>> BuildVersion: 13F34
>>>
>>> $ uname -a
>>> Darwin itako16071.miso 13.4.0 Darwin Kernel Version 13.4.0: Sun Aug 17
>>> 19:50:11 PDT 2014; root:xnu-2422.115.4~1/RELEASE_X86_64 x86_64
>_______________________________________________
>bdwgc mailing list
>bdwgc@lists.opendylan.org
>https://lists.opendylan.org/mailman/listinfo/bdwgc
[-- Attachment #2: Type: text/html, Size: 5731 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#18711: Numerous unknown attribute '__alloc_size__' warnings when using clang
2014-10-14 3:53 ` Mark H Weaver
2014-10-14 7:10 ` William S Fulton
@ 2014-10-14 10:09 ` Ludovic Courtès
1 sibling, 0 replies; 6+ messages in thread
From: Ludovic Courtès @ 2014-10-14 10:09 UTC (permalink / raw)
To: Mark H Weaver; +Cc: bdwgc, William S Fulton, 18711
Mark H Weaver <mhw@netris.org> skribis:
> This is clearly an issue with bdwgc on clang, and possibly only on
> Apple's version of clang. Here's the relevant section of
> gc/gc_config_macros.h from bdwgc 7.4.2:
>
> #ifndef GC_ATTR_ALLOC_SIZE
> /* 'alloc_size' attribute improves __builtin_object_size correctness. */
> /* Only single-argument form of 'alloc_size' attribute is used. */
> # if defined(__GNUC__) && (__GNUC__ > 4 \
> || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3 && !defined(__ICC)) \
> || __clang_major__ > 3 \
> || (__clang_major__ == 3 && __clang_minor__ >= 2))
> # define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum)))
> # else
> # define GC_ATTR_ALLOC_SIZE(argnum)
> # endif
> #endif
AFAIK, Clang and ICC define __GNUC__ by default, even though they don’t
implement all the features of the corresponding GCC, which may explain
why the above doesn’t work as expected.
> You can see that the bdwgc developers have made an effort to check both
> GCC and clang version numbers before using the __alloc_size__ attribute.
> The code above seems to suggest that they believed clang 3.2 or later
> supported this attribute, whereas your version of clang seems to be
> based on upstream clang 3.5. Perhaps Apple removed support for this
> attribute from their clang?
I think for Clang the right way would be to use the ‘__has_attribute’
magic macro:
http://clang.llvm.org/docs/LanguageExtensions.html#has-attribute
Ludo’.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-10-16 22:07 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-10-13 20:56 bug#18711: Numerous unknown attribute '__alloc_size__' warnings when using clang William S Fulton
2014-10-14 3:53 ` Mark H Weaver
2014-10-14 7:10 ` William S Fulton
2014-10-15 16:39 ` Mark H Weaver
2014-10-16 22:07 ` bug#18711: Re[2]: [Gc] " Ivan Maidanski
2014-10-14 10:09 ` Ludovic Courtès
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