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Fix potential heap corruption in code cache.

This commit is contained in:
Ben Vanik 2014-08-06 11:36:16 -07:00
parent d8502c2aa9
commit a085dc547e
1 changed files with 1 additions and 3 deletions
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4
src/alloy/backend/x64/x64_code_cache_win.cc
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@ -88,7 +88,6 @@ void* X64CodeCache::PlaceCode(void* machine_code, size_t code_size,
// Add entry to fn table.
active_chunk_->AddTableEntry(final_address, code_size, stack_size);
lock_.unlock();
// Copy code.
@ -210,8 +209,7 @@ void X64CodeChunk::AddTableEntry(uint8_t* code, size_t code_size,
// Allocate unwind data. We know we have space because we overallocated.
// This should be the tailing 16b with 16b alignment.
size_t unwind_info_offset = offset;
offset += UNWIND_INFO_SIZE;
size_t unwind_info_offset = offset - UNWIND_INFO_SIZE;
if (!stack_size) {
// http://msdn.microsoft.com/en-us/library/ddssxxy8.aspx