diff --git a/libcxx/include/__config b/libcxx/include/__config
--- a/libcxx/include/__config
+++ b/libcxx/include/__config
@@ -340,9 +340,22 @@
 
 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L
 #  if defined(__FreeBSD__)
+#    define _LIBCPP_HAS_ALIGNED_ALLOC
 #    define _LIBCPP_HAS_QUICK_EXIT
 #    define _LIBCPP_HAS_C11_FEATURES
+#  elif defined(__BIONIC__)
+#    define _LIBCPP_HAS_C11_FEATURES
+#    if __ANDROID_API__ >= 21
+#      define _LIBCPP_HAS_QUICK_EXIT
+#    endif
+#    if __ANDROID_API__ >= 28
+#      define _LIBCPP_HAS_ALIGNED_ALLOC
+#    endif
+#    if __ANDROID_API__ >= 29
+#      define _LIBCPP_HAS_TIMESPEC_GET
+#    endif
 #  elif defined(__Fuchsia__) || defined(__wasi__)
+#    define _LIBCPP_HAS_ALIGNED_ALLOC
 #    define _LIBCPP_HAS_QUICK_EXIT
 #    define _LIBCPP_HAS_TIMESPEC_GET
 #    define _LIBCPP_HAS_C11_FEATURES
@@ -352,10 +365,12 @@
 #        define _LIBCPP_HAS_QUICK_EXIT
 #      endif
 #      if _LIBCPP_GLIBC_PREREQ(2, 17)
+#        define _LIBCPP_HAS_ALIGNED_ALLOC
 #        define _LIBCPP_HAS_C11_FEATURES
 #        define _LIBCPP_HAS_TIMESPEC_GET
 #      endif
 #    else // defined(_LIBCPP_HAS_MUSL_LIBC)
+#      define _LIBCPP_HAS_ALIGNED_ALLOC
 #      define _LIBCPP_HAS_QUICK_EXIT
 #      define _LIBCPP_HAS_TIMESPEC_GET
 #      define _LIBCPP_HAS_C11_FEATURES
diff --git a/libcxx/include/cstdlib b/libcxx/include/cstdlib
--- a/libcxx/include/cstdlib
+++ b/libcxx/include/cstdlib
@@ -154,7 +154,7 @@
 using ::at_quick_exit;
 using ::quick_exit;
 #endif
-#if _LIBCPP_STD_VER > 14 && defined(_LIBCPP_HAS_C11_FEATURES)
+#if _LIBCPP_STD_VER > 14 && defined(_LIBCPP_HAS_ALIGNED_ALLOC)
 using ::aligned_alloc;
 #endif
 
diff --git a/libcxx/include/ctime b/libcxx/include/ctime
--- a/libcxx/include/ctime
+++ b/libcxx/include/ctime
@@ -58,7 +58,7 @@
 using ::size_t;
 using ::time_t;
 using ::tm;
-#if _LIBCPP_STD_VER > 14 && defined(_LIBCPP_HAS_C11_FEATURES)
+#if _LIBCPP_STD_VER > 14 && defined(_LIBCPP_HAS_TIMESPEC_GET)
 using ::timespec;
 #endif
 using ::clock;
diff --git a/libcxx/test/std/depr/depr.c.headers/stdlib_h.pass.cpp b/libcxx/test/std/depr/depr.c.headers/stdlib_h.pass.cpp
--- a/libcxx/test/std/depr/depr.c.headers/stdlib_h.pass.cpp
+++ b/libcxx/test/std/depr/depr.c.headers/stdlib_h.pass.cpp
@@ -132,8 +132,7 @@
     static_assert((std::is_same<decltype(rand()), int>::value), "");
     static_assert((std::is_same<decltype(srand(0)), void>::value), "");
 
-//  Microsoft does not implement aligned_alloc in their C library
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) && !defined(_WIN32)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_ALIGNED_ALLOC)
     static_assert((std::is_same<decltype(aligned_alloc(0,0)), void*>::value), "");
 #endif
 
diff --git a/libcxx/test/std/language.support/support.runtime/cstdlib.pass.cpp b/libcxx/test/std/language.support/support.runtime/cstdlib.pass.cpp
--- a/libcxx/test/std/language.support/support.runtime/cstdlib.pass.cpp
+++ b/libcxx/test/std/language.support/support.runtime/cstdlib.pass.cpp
@@ -119,9 +119,8 @@
     static_assert((std::is_same<decltype(std::rand()), int>::value), "");
     static_assert((std::is_same<decltype(std::srand(0)), void>::value), "");
 
-//  Microsoft does not implement aligned_alloc in their C library
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) && !defined(_WIN32)
-    static_assert((std::is_same<decltype(aligned_alloc(0,0)), void*>::value), "");
+#if TEST_STD_VER > 14 && defined(TEST_HAS_ALIGNED_ALLOC)
+    static_assert((std::is_same<decltype(std::aligned_alloc(0,0)), void*>::value), "");
 #endif
 
     static_assert((std::is_same<decltype(std::calloc(0,0)), void*>::value), "");
diff --git a/libcxx/test/std/language.support/support.runtime/ctime.pass.cpp b/libcxx/test/std/language.support/support.runtime/ctime.pass.cpp
--- a/libcxx/test/std/language.support/support.runtime/ctime.pass.cpp
+++ b/libcxx/test/std/language.support/support.runtime/ctime.pass.cpp
@@ -20,7 +20,7 @@
 #error CLOCKS_PER_SEC not defined
 #endif
 
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_TIMESPEC_GET)
 #ifndef TIME_UTC
 #error TIME_UTC not defined
 #endif
@@ -32,7 +32,7 @@
     std::size_t s = 0;
     std::time_t t = 0;
     std::tm tm = {};
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_TIMESPEC_GET)
     std::timespec tmspec = {};
     ((void)tmspec); // Prevent unused warning
 #endif
diff --git a/libcxx/test/std/utilities/time/date.time/ctime.pass.cpp b/libcxx/test/std/utilities/time/date.time/ctime.pass.cpp
--- a/libcxx/test/std/utilities/time/date.time/ctime.pass.cpp
+++ b/libcxx/test/std/utilities/time/date.time/ctime.pass.cpp
@@ -19,7 +19,7 @@
 #error CLOCKS_PER_SEC not defined
 #endif
 
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_TIMESPEC_GET)
 #ifndef TIME_UTC
 #error TIME_UTC not defined
 #endif
@@ -41,7 +41,7 @@
     ((void)t); // Prevent unused warning
     ((void)tm); // Prevent unused warning
     ((void)str); // Prevent unused warning
-#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#if TEST_STD_VER > 14 && defined(TEST_HAS_TIMESPEC_GET)
     std::timespec tmspec = {};
     ((void)tmspec); // Prevent unused warning
 #endif
diff --git a/libcxx/test/support/test_macros.h b/libcxx/test/support/test_macros.h
--- a/libcxx/test/support/test_macros.h
+++ b/libcxx/test/support/test_macros.h
@@ -153,8 +153,18 @@
 #  if defined(__FreeBSD__)
 //  Specifically, FreeBSD does NOT have timespec_get, even though they have all
 //  the rest of C11 - this is PR#38495
+#    define TEST_HAS_ALIGNED_ALLOC
 #    define TEST_HAS_C11_FEATURES
+#  elif defined(__BIONIC__)
+#    define TEST_HAS_C11_FEATURES
+#    if __ANDROID_API__ >= 28
+#      define TEST_HAS_ALIGNED_ALLOC
+#    endif
+#    if __ANDROID_API__ >= 29
+#      define TEST_HAS_TIMESPEC_GET
+#    endif
 #  elif defined(__Fuchsia__) || defined(__wasi__)
+#    define TEST_HAS_ALIGNED_ALLOC
 #    define TEST_HAS_C11_FEATURES
 #    define TEST_HAS_TIMESPEC_GET
 #  elif defined(__linux__)
@@ -164,15 +174,18 @@
 // newlib, etc may all support these features but need to be configured.
 #    if defined(TEST_GLIBC_PREREQ)
 #      if TEST_GLIBC_PREREQ(2, 17)
+#        define TEST_HAS_ALIGNED_ALLOC
 #        define TEST_HAS_TIMESPEC_GET
 #        define TEST_HAS_C11_FEATURES
 #      endif
 #    elif defined(_LIBCPP_HAS_MUSL_LIBC)
+#      define TEST_HAS_ALIGNED_ALLOC
 #      define TEST_HAS_C11_FEATURES
 #      define TEST_HAS_TIMESPEC_GET
 #    endif
 #  elif defined(_WIN32)
 #    if defined(_MSC_VER) && !defined(__MINGW32__)
+#      define TEST_HAS_ALIGNED_ALLOC
 #      define TEST_HAS_C11_FEATURES // Using Microsoft's C Runtime library
 #      define TEST_HAS_TIMESPEC_GET
 #    endif