[libcxxabi] r217604 - Adding ABI support for __cxa_throw_bad_array_new_length.

[Aaron Ballman]

Author: aaronballman
Date: Thu Sep 11 12:26:43 2014
New Revision: 217604

URL: http://llvm.org/viewvc/llvm-project?rev=217604&view=rev
Log:
Adding ABI support for __cxa_throw_bad_array_new_length.

Added:
    libcxxabi/trunk/test/test_aux_runtime_op_array_new.cpp
Modified:
    libcxxabi/trunk/CREDITS.TXT
    libcxxabi/trunk/include/cxxabi.h
    libcxxabi/trunk/src/cxa_aux_runtime.cpp

Modified: libcxxabi/trunk/CREDITS.TXT
URL: http://llvm.org/viewvc/llvm-project/libcxxabi/trunk/CREDITS.TXT?rev=217604&r1=217603&r2=217604&view=diff
==============================================================================
--- libcxxabi/trunk/CREDITS.TXT (original)
+++ libcxxabi/trunk/CREDITS.TXT Thu Sep 11 12:26:43 2014
@@ -8,6 +8,10 @@ beautification by scripts.  The fields a
 (W), PGP key ID and fingerprint (P), description (D), and snail-mail address
 (S).
 
+N: Aaron Ballman
+E: aaron at aaronballman.com
+D: Minor patches
+
 N: Logan Chien
 E: logan.chien at mediatek.com
 D: ARM EHABI Unwind & Exception Handling

Modified: libcxxabi/trunk/include/cxxabi.h
URL: http://llvm.org/viewvc/llvm-project/libcxxabi/trunk/include/cxxabi.h?rev=217604&r1=217603&r2=217604&view=diff
==============================================================================
--- libcxxabi/trunk/include/cxxabi.h (original)
+++ libcxxabi/trunk/include/cxxabi.h Thu Sep 11 12:26:43 2014
@@ -66,6 +66,7 @@ extern LIBCXXABI_NORETURN void __cxa_ret
 // 2.6 Auxiliary Runtime APIs
 extern LIBCXXABI_NORETURN void __cxa_bad_cast(void);
 extern LIBCXXABI_NORETURN void __cxa_bad_typeid(void);
+extern LIBCXXABI_NORETURN void __cxa_throw_bad_array_new_length(void);
 
 
 

Modified: libcxxabi/trunk/src/cxa_aux_runtime.cpp
URL: http://llvm.org/viewvc/llvm-project/libcxxabi/trunk/src/cxa_aux_runtime.cpp?rev=217604&r1=217603&r2=217604&view=diff
==============================================================================
--- libcxxabi/trunk/src/cxa_aux_runtime.cpp (original)
+++ libcxxabi/trunk/src/cxa_aux_runtime.cpp Thu Sep 11 12:26:43 2014
@@ -11,6 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "cxxabi.h"
+#include <new>
 #include <typeinfo>
 
 namespace __cxxabiv1
@@ -29,6 +30,10 @@ void __cxa_bad_typeid(void) {
     throw std::bad_typeid();
 }
 
+LIBCXXABI_NORETURN
+void __cxa_throw_bad_array_new_length(void) {
+    throw std::bad_array_new_length();
+}
 }  // extern "C"
 
 }  // abi

Added: libcxxabi/trunk/test/test_aux_runtime_op_array_new.cpp
URL: http://llvm.org/viewvc/llvm-project/libcxxabi/trunk/test/test_aux_runtime_op_array_new.cpp?rev=217604&view=auto
==============================================================================
--- libcxxabi/trunk/test/test_aux_runtime_op_array_new.cpp (added)
+++ libcxxabi/trunk/test/test_aux_runtime_op_array_new.cpp Thu Sep 11 12:26:43 2014
@@ -0,0 +1,38 @@
+//===-------------------------- test_aux_runtime_op_array_new.cpp ---------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <iostream>
+#include <cxxabi.h>
+
+//  If the expression passed to operator new[] would result in an overflow, the
+//  allocation function is not called, and a std::bad_array_new_length exception
+//  is thrown instead (5.3.4p7).
+bool bad_array_new_length_test() {
+    try {
+      // We test this directly because Clang does not currently codegen the
+      // correct call to __cxa_bad_array_new_length, so this test would result
+      // in passing -1 to ::operator new[], which would then throw a
+      // std::bad_alloc, causing the test to fail.
+      __cxxabiv1::__cxa_throw_bad_array_new_length();
+    } catch ( const std::bad_array_new_length &banl ) {
+      return true;
+    }
+    return false;
+}
+
+int main(int argc, char *argv []) {
+    int ret_val = 0;
+
+    if ( !bad_array_new_length_test ()) {
+        std::cerr << "Bad array new length test failed!" << std::endl;
+        ret_val = 1;
+    }
+
+    return ret_val;
+}