[libc++abi] Remove support for Android 4 and older

[brad0]

No description provided.

[llvmbot]

@llvm/pr-subscribers-libcxxabi

Author: Brad Smith (brad0)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/124054.diff

1 Files Affected:

• (modified) libcxxabi/src/abort_message.cpp (+2-14)

diff --git a/libcxxabi/src/abort_message.cpp b/libcxxabi/src/abort_message.cpp
index 9e5a984807e2c3..4d78fbd877c79c 100644
--- a/libcxxabi/src/abort_message.cpp
+++ b/libcxxabi/src/abort_message.cpp
@@ -12,13 +12,8 @@
 #include "abort_message.h"
 
 #ifdef __BIONIC__
-#   include <android/api-level.h>
-#   if __ANDROID_API__ >= 21
-#       include <syslog.h>
-        extern "C" void android_set_abort_message(const char* msg);
-#   else
-#       include <assert.h>
-#   endif // __ANDROID_API__ >= 21
+#   include <syslog.h>
+    extern "C" void android_set_abort_message(const char* msg);
 #endif // __BIONIC__
 
 #if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
@@ -59,7 +54,6 @@ void __abort_message(const char* format, ...)
     vasprintf(&buffer, format, list);
     va_end(list);
 
-#   if __ANDROID_API__ >= 21
     // Show error in tombstone.
     android_set_abort_message(buffer);
 
@@ -67,12 +61,6 @@ void __abort_message(const char* format, ...)
     openlog("libc++abi", 0, 0);
     syslog(LOG_CRIT, "%s", buffer);
     closelog();
-#   else
-    // The good error reporting wasn't available in Android until L. Since we're
-    // about to abort anyway, just call __assert2, which will log _somewhere_
-    // (tombstone and/or logcat) in older releases.
-    __assert2(__FILE__, __LINE__, __func__, buffer);
-#   endif // __ANDROID_API__ >= 21
 #endif // __BIONIC__
 
     abort();

[github-actions]

✅ With the latest revision this PR passed the C/C++ code formatter.

[enh-google]

(lgtm. thanks!)