Changeset 65311 in webkit for trunk/JavaScriptCore/wtf/FastMalloc.cpp

Timestamp:

Aug 13, 2010, 3:14:36 AM (15 years ago)

Author:

[email protected]

Message:

Avoid increasing required alignment of target type warning on ARM
​https://bugs.webkit.org/show_bug.cgi?id=38045

Reviewed by Gavin Barraclough.

The reinterpret_cast<Type1*>([pointer to Type2]) expressions - where
sizeof(Type1) > sizeof(Type2) - cause the following warning on ARM:
increases required alignment of target type warnings.
Casting the type of [pointer to Type2] object to void* bypasses the
warning.

• JavaScriptCore/assembler/ARMAssembler.cpp:

(JSC::ARMAssembler::executableCopy):

• JavaScriptCore/assembler/AssemblerBuffer.h:

(JSC::AssemblerBuffer::putShortUnchecked):
(JSC::AssemblerBuffer::putIntUnchecked):
(JSC::AssemblerBuffer::putInt64Unchecked):

• JavaScriptCore/interpreter/RegisterFile.h:

(JSC::RegisterFile::RegisterFile):
(JSC::RegisterFile::grow):

• JavaScriptCore/jit/JITStubs.cpp:
• JavaScriptCore/pcre/pcre_compile.cpp:

(jsRegExpCompile):

• JavaScriptCore/runtime/JSArray.cpp:

(JSC::JSArray::putSlowCase):
(JSC::JSArray::increaseVectorLength):
(JSC::JSArray::increaseVectorPrefixLength):
(JSC::JSArray::shiftCount):
(JSC::JSArray::unshiftCount):

• JavaScriptCore/wtf/FastMalloc.cpp:

(WTF::PageHeapAllocator::New):
(WTF::TCMalloc_Central_FreeList::Populate):

• wtf/MD5.cpp:

(WTF::reverseBytes):
(WTF::MD5::addBytes):
(WTF::MD5::checksum):

• JavaScriptCore/wtf/StdLibExtras.h:

(isPointerTypeAlignmentOkay):
(reinterpret_cast_ptr):

• JavaScriptCore/wtf/Vector.h:

(WTF::VectorBuffer::inlineBuffer):

• JavaScriptCore/wtf/qt/StringQt.cpp:

(WTF::String::String):

File:

• trunk/JavaScriptCore/wtf/FastMalloc.cpp (modified) (3 diffs)

trunk/JavaScriptCore/wtf/FastMalloc.cpp

@@ -83 +83 @@
 #include <pthread.h>
 #endif
+#include <wtf/StdLibExtras.h>
 
 #ifndef NO_TCMALLOC_SAMPLES
@@ -1018 +1019 @@
           CRASH();
 
-        *(void**)new_allocation = allocated_regions_;
+        *reinterpret_cast_ptr<void**>(new_allocation) = allocated_regions_;
         allocated_regions_ = new_allocation;
         free_area_ = new_allocation + kAlignedSize;
@@ -2719 +2720 @@
   while ((nptr = ptr + size) <= limit) {
     *tail = ptr;
-    tail = reinterpret_cast<void**>(ptr);
+    tail = reinterpret_cast_ptr<void**>(ptr);
     ptr = nptr;
     num++;