From: Jakub Jelinek <jakub@redhat.com>
Date: Wed, 21 Sep 2016 14:40:30 +0000 (+0200)
Subject: re PR sanitizer/77567 (ASAN: Bugus error "alloc-dealloc-mismatch (malloc vs operator... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=aef6a97c0e1463da3fc914b6782c7064dd889a62;p=gcc.git

re PR sanitizer/77567 (ASAN: Bugus error "alloc-dealloc-mismatch (malloc vs operator delete [])" with C++17's over-aligned types)

	PR sanitizer/77567
	* asan/asan_new_delete.cc: Cherry-pick upstream r282019.

From-SVN: r240316
---

diff --git a/libsanitizer/ChangeLog b/libsanitizer/ChangeLog
index a06ab4de7e7..0a5282e3e9d 100644
--- a/libsanitizer/ChangeLog
+++ b/libsanitizer/ChangeLog
@@ -1,3 +1,8 @@
+2016-09-21  Jakub Jelinek  <jakub@redhat.com>
+
+	PR sanitizer/77567
+	* asan/asan_new_delete.cc: Cherry-pick upstream r282019.
+
 2016-09-05  Jakub Jelinek  <jakub@redhat.com>
 
 	PR sanitizer/77396
diff --git a/libsanitizer/asan/asan_new_delete.cc b/libsanitizer/asan/asan_new_delete.cc
index 719cdfa2bb9..bf7a34ac87b 100644
--- a/libsanitizer/asan/asan_new_delete.cc
+++ b/libsanitizer/asan/asan_new_delete.cc
@@ -27,17 +27,30 @@
 
 using namespace __asan;  // NOLINT
 
+// FreeBSD prior v9.2 have wrong definition of 'size_t'.
+// http://svnweb.freebsd.org/base?view=revision&revision=232261
+#if SANITIZER_FREEBSD && SANITIZER_WORDSIZE == 32
+#include <sys/param.h>
+#if __FreeBSD_version <= 902001  // v9.2
+#define size_t unsigned
+#endif  // __FreeBSD_version
+#endif  // SANITIZER_FREEBSD && SANITIZER_WORDSIZE == 32
+
 // This code has issues on OSX.
 // See https://code.google.com/p/address-sanitizer/issues/detail?id=131.
 
-// Fake std::nothrow_t to avoid including <new>.
+// Fake std::nothrow_t and std::align_val_t to avoid including <new>.
 namespace std {
 struct nothrow_t {};
+enum class align_val_t: size_t {};
 }  // namespace std
 
 #define OPERATOR_NEW_BODY(type) \
   GET_STACK_TRACE_MALLOC;\
   return asan_memalign(0, size, &stack, type);
+#define OPERATOR_NEW_BODY_ALIGN(type) \
+  GET_STACK_TRACE_MALLOC;\
+  return asan_memalign((uptr)align, size, &stack, type);
 
 // On OS X it's not enough to just provide our own 'operator new' and
 // 'operator delete' implementations, because they're going to be in the
@@ -47,15 +60,6 @@ struct nothrow_t {};
 // To make sure that C++ allocation/deallocation operators are overridden on
 // OS X we need to intercept them using their mangled names.
 #if !SANITIZER_MAC
-// FreeBSD prior v9.2 have wrong definition of 'size_t'.
-// http://svnweb.freebsd.org/base?view=revision&revision=232261
-#if SANITIZER_FREEBSD && SANITIZER_WORDSIZE == 32
-#include <sys/param.h>
-#if __FreeBSD_version <= 902001  // v9.2
-#define size_t unsigned
-#endif  // __FreeBSD_version
-#endif  // SANITIZER_FREEBSD && SANITIZER_WORDSIZE == 32
-
 CXX_OPERATOR_ATTRIBUTE
 void *operator new(size_t size) { OPERATOR_NEW_BODY(FROM_NEW); }
 CXX_OPERATOR_ATTRIBUTE
@@ -66,6 +70,18 @@ void *operator new(size_t size, std::nothrow_t const&)
 CXX_OPERATOR_ATTRIBUTE
 void *operator new[](size_t size, std::nothrow_t const&)
 { OPERATOR_NEW_BODY(FROM_NEW_BR); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new(size_t size, std::align_val_t align)
+{ OPERATOR_NEW_BODY_ALIGN(FROM_NEW); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new[](size_t size, std::align_val_t align)
+{ OPERATOR_NEW_BODY_ALIGN(FROM_NEW_BR); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new(size_t size, std::align_val_t align, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY_ALIGN(FROM_NEW); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new[](size_t size, std::align_val_t align, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY_ALIGN(FROM_NEW_BR); }
 
 #else  // SANITIZER_MAC
 INTERCEPTOR(void *, _Znwm, size_t size) {
@@ -113,6 +129,32 @@ void operator delete[](void *ptr, size_t size) NOEXCEPT {
   GET_STACK_TRACE_FREE;
   asan_sized_free(ptr, size, &stack, FROM_NEW_BR);
 }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete(void *ptr, std::align_val_t) NOEXCEPT {
+  OPERATOR_DELETE_BODY(FROM_NEW);
+}
+CXX_OPERATOR_ATTRIBUTE
+void operator delete[](void *ptr, std::align_val_t) NOEXCEPT {
+  OPERATOR_DELETE_BODY(FROM_NEW_BR);
+}
+CXX_OPERATOR_ATTRIBUTE
+void operator delete(void *ptr, std::align_val_t, std::nothrow_t const&) {
+  OPERATOR_DELETE_BODY(FROM_NEW);
+}
+CXX_OPERATOR_ATTRIBUTE
+void operator delete[](void *ptr, std::align_val_t, std::nothrow_t const&) {
+  OPERATOR_DELETE_BODY(FROM_NEW_BR);
+}
+CXX_OPERATOR_ATTRIBUTE
+void operator delete(void *ptr, size_t size, std::align_val_t) NOEXCEPT {
+  GET_STACK_TRACE_FREE;
+  asan_sized_free(ptr, size, &stack, FROM_NEW);
+}
+CXX_OPERATOR_ATTRIBUTE
+void operator delete[](void *ptr, size_t size, std::align_val_t) NOEXCEPT {
+  GET_STACK_TRACE_FREE;
+  asan_sized_free(ptr, size, &stack, FROM_NEW_BR);
+}
 
 #else  // SANITIZER_MAC
 INTERCEPTOR(void, _ZdlPv, void *ptr) {