runtime/vm/disassembler_x64.cc - Issue 10915256: FIx crash in disassembler: check that an addrs is tagged before testing it to be part of the heap.

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Unified Diff: runtime/vm/disassembler_x64.cc

Issue 10915256: FIx crash in disassembler: check that an addrs is tagged before testing it to be part of the heap. (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/

Patch Set: Created 8 years, 3 months ago

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Index: runtime/vm/disassembler_x64.cc

===================================================================

--- runtime/vm/disassembler_x64.cc (revision 12306)

+++ runtime/vm/disassembler_x64.cc (working copy)

@@ -799,7 +799,8 @@

uword addr = reinterpret_cast<uword>(addr_byte_ptr);

AppendToBuffer("%#"Px"", addr);

// Try to print as heap object or stub name

- if (!Isolate::Current()->heap()->CodeContains(addr) &&

+ if (((addr & kSmiTagMask) == kHeapObjectTag) &&

+ !Isolate::Current()->heap()->CodeContains(addr) &&

Isolate::Current()->heap()->Contains(addr - kHeapObjectTag)) {

Object& obj = Object::Handle(reinterpret_cast<RawObject*>(addr));

if (obj.IsArray()) {

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