commit aede30d316fae9399c52b26e70f7e71fdb965412
author Logan Chien <loganchien@google.com> Tue Oct 23 15:03:43 2018 +0800
committer Logan Chien <loganchien@google.com> Tue Oct 23 21:47:34 2018 +0800
tree 04c581d4e7a48e9932bed134511c72ffb79063cd
parent a8a716e42a8e6b8f28abf2b2f8f93b1e8579423d

libc: Add default __STRING implementation

This commit defines a default `__STRING()` definition.  There should be
a default definition because the unit test cases of versioner will
include `android/versioning.h` directly.  We cannot include
`sys/cdefs.h` in `android/versioning.h` either because that will lead to
circular inclusion.

Bug: 113263746
Test: ./bionic/tools/versioner/run_tests.py
Change-Id: Ie99c0eef4414fd687347baf3a2d295468877464f

libc/include/android/versioning.h

diff --git a/libc/include/android/versioning.h b/libc/include/android/versioning.h
index cab1156..6e4b8ab 100644
--- a/libc/include/android/versioning.h
+++ b/libc/include/android/versioning.h
@@ -17,6 +17,10 @@
 #ifndef ANDROID_VERSIONING_H
 #define ANDROID_VERSIONING_H
 
+#ifndef __STRING
+#define __STRING(x) #x
+#endif
+
 #define __INTRODUCED_IN(api_level) __attribute__((annotate("introduced_in=" __STRING(api_level))))
 #define __INTRODUCED_IN_FUTURE __attribute__((annotate("introduced_in_future")))
 #define __DEPRECATED_IN(api_level) __attribute__((annotate("deprecated_in=" __STRING(api_level))))