[PATCH] D25946: [compiler-rt][asan] Add support for desallocation of unhandled pointers

[Etienne Bergeron via Phabricator via llvm-commits]

etienneb added a comment.

PTAL.

Without the fix, the unittest is failing with:

  % "D:\src\llvm\ninja\projects\compiler-rt\test\asan\I386WindowsConfig\TestCases\Windows\Output\dll_heap_allocation.cc.tmp"
  myglobal: 42
  =================================================================
  ==17584==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x00add6f8 in thread T0
      #0 0x39e7e4 in __asan_wrap_HeapFree d:\src\llvm\llvm\projects\compiler-rt\lib\asan\asan_malloc_win.cc:181
      #1 0xf5e99fe in _stdio_common_vswprintf+0x12e (C:\Windows\system32\ucrtbase.DLL+0x100299fe)
      #2 0x77c094c4 in RtlIsCurrentThreadAttachExempt+0x5e (C:\Windows\SysWOW64\ntdll.dll+0x7dea94c4)
      #3 0x77c28ebd in LdrShutdownProcess+0x96 (C:\Windows\SysWOW64\ntdll.dll+0x7dec8ebd)
      #4 0x77c28e09 in RtlExitUserProcess+0x73 (C:\Windows\SysWOW64\ntdll.dll+0x7dec8e09)
      #5 0x775879c4 in ExitProcess+0x14 (C:\Windows\syswow64\kernel32.dll+0x7dd779c4)
      #6 0x3d28e8 in exit_or_terminate_process d:\th\minkernel\crts\ucrt\src\appcrt\startup\exit.cpp:129
      #7 0x3d287e in common_exit d:\th\minkernel\crts\ucrt\src\appcrt\startup\exit.cpp:269
      #8 0x3d2a63 in exit d:\th\minkernel\crts\ucrt\src\appcrt\startup\exit.cpp:282
      #9 0x3b1159 in __scrt_common_main_seh f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:260
      #10 0x77583369 in BaseThreadInitThunk+0x11 (C:\Windows\syswow64\kernel32.dll+0x7dd73369)
      #11 0x77c09901 in RtlInitializeExceptionChain+0x62 (C:\Windows\SysWOW64\ntdll.dll+0x7dea9901)
      #12 0x77c098d4 in RtlInitializeExceptionChain+0x35 (C:\Windows\SysWOW64\ntdll.dll+0x7dea98d4)


https://reviews.llvm.org/D25946