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Fix <features.h> (_BSD_SOURCE and _GNU_SOURCE).

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<features.h> is supposed to take user-settable stuff like _GNU_SOURCE
and _BSD_SOURCE and turn them into __USE_GNU and __USE_BSD for use in
the C library headers. Instead, bionic used to unconditionally define
_BSD_SOURCE and _GNU_SOURCE, and then test _GNU_SOURCE in the header
files (which makes no sense whatsoever).

Bug: 14659579
Change-Id: Ice4cf21a364ea2e559071dc8329e995277d5b987
This commit is contained in:
Elliott Hughes
2014-08-18 16:04:03 -07:00
parent 205cc41556
commit 5f5cc45cf0
7 changed files with 20 additions and 16 deletions
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15
libc/include/features.h
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@@ -25,18 +25,17 @@
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _FEATURES_H_
#define _FEATURES_H_
/* certain Linux-specific programs expect a <features.h> header file
* that defines various features macros
*/
#if defined(_BSD_SOURCE)
# define __USE_BSD 1
#endif
/* we do include a number of BSD extensions */
#define _BSD_SOURCE 1
/* we do include a number of GNU extensions */
#define _GNU_SOURCE 1
#if defined(_GNU_SOURCE)
# define __USE_GNU 1
#endif
/* C95 support */
#undef __USE_ISOC95