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libsanitizer, Darwin : Handle missing __builtin_os_log_format.

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GCC does not, currently, define __builtin_os_log_format, which
is needed by os/log.h.  Do not include that header unless the
builtin is defined (since the header errors out on the same
condition).  Provide a work-around solution to the missing API
provided via the header.

libsanitizer/ChangeLog:

	* sanitizer_common/sanitizer_mac.cpp : Check for the
	availability of __builtin_os_log_format before trying to
	include a header depending on it.
	(OS_LOG_DEFAULT): New.
	(os_log_error): Define to a fall-back using an older API.
This commit is contained in:
Iain Sandoe 2021-05-13 19:43:09 +01:00
parent 8aa8a2af8f
commit adab7b2bf4
1 changed files with 9 additions and 1 deletions
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10
libsanitizer/sanitizer_common/sanitizer_mac.cpp
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@ -70,7 +70,15 @@ extern "C" {
#include <mach/mach_time.h>
#include <mach/vm_statistics.h>
#include <malloc/malloc.h>
#include <os/log.h>
#if defined(__has_builtin) && __has_builtin(__builtin_os_log_format)
# include <os/log.h>
#else
/* Without support for __builtin_os_log_format, fall back to the older
method. */
# define OS_LOG_DEFAULT 0
# define os_log_error(A,B,C) \
asl_log(nullptr, nullptr, ASL_LEVEL_ERR, "%s", (C));
#endif
#include <pthread.h>
#include <sched.h>
#include <signal.h>