[compiler-rt] r318775 - [sanitizer] Define SANITIZER_USE_GETAUXVAL for Android

[Kostya Kortchinsky via llvm-commits]

Author: cryptoad
Date: Tue Nov 21 08:08:07 2017
New Revision: 318775

URL: http://llvm.org/viewvc/llvm-project?rev=318775&view=rev
Log:
[sanitizer] Define SANITIZER_USE_GETAUXVAL for Android

Summary:
Android for API level >= 21 has `getauxval`. Enable `SANITIZER_USE_GETAUXVAL`
when those requirements are met. Correct a typo in the header.

Reviewers: alekseyshl

Reviewed By: alekseyshl

Subscribers: srhines, llvm-commits, kubamracek

Differential Revision: https://reviews.llvm.org/D40260

Modified:
    compiler-rt/trunk/lib/sanitizer_common/sanitizer_getauxval.h

Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_getauxval.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_getauxval.h?rev=318775&r1=318774&r2=318775&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_getauxval.h (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_getauxval.h Tue Nov 21 08:08:07 2017
@@ -8,7 +8,8 @@
 //===----------------------------------------------------------------------===//
 //
 // Common getauxval() guards and definitions.
-// getauxval() is not defined until glbc version 2.16.
+// getauxval() is not defined until glibc version 2.16, or until API level 21
+// for Android.
 //
 //===----------------------------------------------------------------------===//
 
@@ -25,7 +26,7 @@
 #define __GLIBC_PREREQ(x, y) 0
 #endif
 
-#if __GLIBC_PREREQ(2, 16)
+#if __GLIBC_PREREQ(2, 16) || (SANITIZER_ANDROID && __ANDROID_API__ >= 21)
 # define SANITIZER_USE_GETAUXVAL 1
 #else
 # define SANITIZER_USE_GETAUXVAL 0