<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/61909>61909</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            "Failed to use and restart external symbolizer" with ASAN_OPTIONS=windows_hook_rtl_allocators=true
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            bug,
            compiler-rt:asan,
            platform:windows
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          alvinhochun
      </td>
    </tr>
</table>

<pre>
    Building a trivial source with either [llvm-mingw](https://github.com/mstorsjo/llvm-mingw) or the official Windows LLVM 16.0.0 release:

```c++
// clang++ -fsanitize=address -g test.cpp -o test.exe
int main() {
    *((volatile int *)nullptr) = 1;
}
```

Running the program normally will give a symbolized backtrace:

```
==15548==ERROR: AddressSanitizer: access-violation on unknown address 0x000000000000 (pc 0x7ff640a813e2 bp 0x006ea035f9f0 sp 0x006ea035f9c0 T0)
==15548==The signal is caused by a WRITE memory access.
==15548==Hint: address points to the zero page.
    #0 0x7ff640a813e1 in main D:/test.cpp:2:32
[...]
```

However, if the environment variable `ASAN_OPTIONS=windows_hook_rtl_allocators=true` is set, then it fails to start `llvm-symbolizer` and (for mingw-w64 target using DWARF debug info) the backtrace does not contain symbol names and line numbers:

```
==17996==ERROR: AddressSanitizer: access-violation on unknown address 0x000000000000 (pc 0x7ff6f54313e2 bp 0x0054f9d0f990 sp 0x0054f9d0f960 T0)
==17996==The signal is caused by a WRITE memory access.
==17996==Hint: address points to the zero page.
==17996==WARNING: Failed to use and restart external symbolizer!
 #0 0x7ff6f54313e1 (D:\temp\test.exe+0x1400013e1)
[...]
```

If I set verbosity to 3, the output contains these lines:

```
==10176==Launching symbolizer command: "D:\dev\toolchain\llvm-mingw\llvm-mingw-20230320-ucrt-x86_64\bin/llvm-symbolizer.exe" "--demangle" "--inlines" "--default-arch=x86_64"
==10176==WARNING: AddressSanitizer failed to create process for D:\dev\toolchain\llvm-mingw\llvm-mingw-20230320-ucrt-x86_64\bin/llvm-symbolizer.exe (error code: 87)
```

It appears the `CreateProcessA` call fails with Win32 error code 87 which should be ERROR_INVALID_PARAMETER.
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJy0ll9v2y4Xx18NuTlKRHDsxBe5SOvm-VXquimr1ssK42ObDYMFOGn36h-B3Sbbsz7a9NOqqImP4fz58jkAd042GnFL0iuSFjM--NbYLVdHqVsj2kHPSlO9bK8GqSqpG-DgrTxKrsCZwQqEk_QtoPQtWiDplVLHbt5J3ZxIWhC2ab3vHUl2hO0J2zfSt0O5EKYjbN85b6z7agjbX8xiORgLvkUwdS1FiPQodWVODu7uvnyAZbagCwoWFXKHwTMtCH39n9HxIwi7Cp_RGmODUFw3ox3mteNaevkdSVLwqrLoHMwb8Oj8QvQ9zM34G59xdCK1h45LTdgm5EjWk3MAAMJ20bw5GsW9VAhhdLTmelCq9zbOSQpYkuQ1q3XxU9KXlRwGrYPeQYjemsbyDrSxHVfqBU5SKWjkEYGDe-lKo-R3rKDk4pu3XLyryvSYFCQplmm62ow_bw6HjweS7GA3CvF5ksYGGxcCnZsfZSzNaDAaBv1Nm5OGV-HoM734A8I2vQD6vK7rbEX5Zpkgg7KPwzLkNEnrvKbgfrQICg-UsPydJB9ahMAqVyAdCD64UPELcHg83D7cQIedsS9Tuot3nPwjtY9FTYn3RmrvwJuo83e0Bnre4OJyaRP6YylLkDqSAMXI9SszJNkxkuwSNgVPrxaLReiC91f5H3PCI1rCrkHWMQfUR2mN7lB7OHIreakQSEZ3n3f3Tx8_Pdx-vP9MkuI0tsRTa8y3J-vVE1fKCB4aiiSFtwOSjAahHPrg3beoQXqouVSxXue59cFxbL03iGyYxnUV1rA2FmJPzk_ZCjy3DXoYXKCyeNwd9lBhOTQgdW0C3SH7NwKhMuhAGw_CaB_EGkOA5h26GEFJjaCHrkTrfgvYdZ5nfx_YOl0ll8CmqzqvaJ3nb8C-WrJfAXtO8l8Ae3byZ8D-z_TH3eH-9v4_wcOeS4VVmDk4jAtgcYQAnz3akOYFBWw5tcAF_5MyyyBXRD-99tj18WvaKdkVfV6uKKVh3Fma3-iE2xpuA6xwRFsaJ_1LSDWZ2AUz-H54g8kFm8OI0O-xQ5frSZI7PmjRBojP5YIwXcd1FXQijE3FVXgMtRmjRBs2_vT68nC7eJgzyhKaMDofhPXz5032lK1Iel2G02L_U4ONOrEQZz6vsOO6UWeD1GNN5wE1H5SfcytakhSTa8beKe5ivX9ujdj6IwDCIvfxWAnoQejzv15ygAatNUHrKhxQsFmfAfklER543yO3cbXDVnUd8_40ph0mgeBKTXtavIc8Sp0wOMeBzRpOrRQtuNYMqoISIW4eT7f3X3Z3t8XTp91h9-Hm4eawmFXbpMqTnM9wu8w2NF1mmzSbtdtqw8WqykuBmeBlWmV8XZcZT_P1Ks3Ems3kNqqxosmSLlfhglKXa8o2-YbRqqpxQ1YUOy7VIgizMLaZSecG3GbLnOYzxUtULt7AGCuHJiwvuyaMCdP1UqGd27AHcMf126tecV8b25FkNx0F4VVazOw2il8OjSMrqqTz7hzVS69wSxj7w82Ajer-8Rk0G6za_p8bYEjsFZfemq8oPGH7qI0jbB_l-W8AAAD__ww9Pb4">