<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/112065>112065</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            When a macro contains '<' or '>', clang is unable to handle it correctly.
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          xb284524239
      </td>
    </tr>
</table>

<pre>
    When I try to pass a macro which contains `<` or `>` symbols, my code fails to compile. If I remove the `<` and `>` symbols, it compiles without issues. (BTW, OS: Windows10, IDE: VSCode)

```
// CMakeLists.txt

cmake_minimum_required(VERSION 3.30)
project(Test006 VERSION 0.1.0 LANGUAGES C CXX)
set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
add_executable(Test006 main.cpp)
set(PRODUCT_AUTHOR "Paul Xu <abc123@qq.com>") # pass a macro which contains '<' or '>' 
target_compile_definitions(Test006 PRIVATE PRODUCT_AUTHOR="${PRODUCT_AUTHOR}")
```

```
// main.cpp

#include <print>
int main(int argc, char *argv[]) {
 std::println("The author is: {}", PRODUCT_AUTHOR);
  return 0;
}
```

```
// compile_commands.json (Generated automatically by CMake)

[
{
  "directory": "C:/Workspace/VSCode_Workspace/Test006/build",
  "command": "C:\\PROGRA~1\\LLVM\\bin\\CLANG_~1.EXE -DPRODUCT_AUTHOR=\"\\\"Paul Xu <abc123@qq.com>\\\"\" -O0 -std=gnu++23 -D_DEBUG -D_DLL -D_MT -Xclang --dependent-lib=msvcrtd -g -Xclang -gcodeview @CMakeFiles\\Test006.dir\\main.cpp.obj.modmap -o CMakeFiles\\Test006.dir\\main.cpp.obj -c C:\\Workspace\\VSCode_Workspace\\Test006\\main.cpp",
  "file": "C:\\Workspace\\VSCode_Workspace\\Test006\\main.cpp",
 "output": "CMakeFiles\\Test006.dir\\main.cpp.obj"
}
]
```

```
// error logs

[main] Building folder: c:/Workspace/VSCode_Workspace/Test006/build 
[build] Starting build
[proc] Executing command: "C:\Program Files\CMake\bin\cmake.EXE" --build c:/Workspace/VSCode_Workspace/Test006/build --config Debug --target all --
[build] [1/4  25% :: 0.021] Scanning C:/Workspace/VSCode_Workspace/Test006/main.cpp for CXX dependencies
[build] FAILED: CMakeFiles/Test006.dir/main.cpp.obj.ddi 
[build] C:\Windows\system32\cmd.exe /C ""C:/Program Files/LLVM/bin/clang-scan-deps.exe" -format=p1689 -- C:\PROGRA~1\LLVM\bin\CLANG_~1.EXE -DPRODUCT_AUTHOR="\"Paul Xu <abc123@qq.com>\""  -O0 -std=gnu++23 -D_DEBUG -D_DLL -D_MT -Xclang --dependent-lib=msvcrtd -g -Xclang -gcodeview -x c++ C:/Workspace/VSCode_Workspace/Test006/main.cpp -c -o CMakeFiles\Test006.dir\main.cpp.obj -resource-dir "C:/Program Files/LLVM/lib/clang/19" -MT CMakeFiles\Test006.dir\main.cpp.obj.ddi -MD -MF CMakeFiles\Test006.dir\main.cpp.obj.ddi.d > CMakeFiles\Test006.dir\main.cpp.obj.ddi.tmp && "C:/Program Files/CMake/bin/cmake.exe" -E rename CMakeFiles\Test006.dir\main.cpp.obj.ddi.tmp CMakeFiles\Test006.dir\main.cpp.obj.ddi"
[build] The system cannot find the file specified.
[build] ninja: build stopped: subcommand failed.
[proc] The command: "C:\Program Files\CMake\bin\cmake.EXE" --build c:/Workspace/VSCode_Workspace/Test006/build --config Debug --target all -- exited with code: 1
[driver] Build completed: 00:00:00.076
[build] Build finished with exit code 1

```
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJzMV1tv4jAW_jXm5ShRcAiXBx4gId1q22mX0pm-ISc24JnEzthOp7zMb1_ZJpSWUbuMVquVKhpfzvG5fZ99iNZ8KxibomSOkqxHWrOTavpS4PEgwQMcT3qFpPvptx0TcA1G7cFIaIjWQKAmpZLwa8fLHZRSGMKFBjSMUJyiYQRS-cHCDvS-LmSlEU6h3kMpKYMN4ZW26kpZN7xiIVxv4BoUq-UzA7NjJ7qIoH9Wxk0nruEXNzvZGuBat0yHgPB4vvpmd909oHgG37ig8pfuR3bqOlvYua8PqaQM4QmKMhTNDr_D6PDnhzhHOIf0lvxgN1wbHZoXc7q_rMkPtq654HVbrxX72XLFKMLjr4vlw_XdF4jDODqe0Sj5nZUG4fGKaRNFQ-i2RWE_jOBm9uXqcXa1eIAU0qeno5xmVia9nf1zsU6fntYPq9mXbLbMAMef7lkvF_96vF4uMrj7ctxMKF2zF1a2hhQVO7GnJlyEZdO8U3u_vMse09V69rj6x90SEMb3pK3gqQUUp6Qo-zhGg-jnz7CUtc0UxghPAOH444LBI5tkPHIFYwcLO_AHG6K2zKwPKV5TtuGCGy6FPjH3fnn9dbZawFv7UJw5CwZoNH-3MvIrkz9n-4MSOAbmdCeOuSirljIbhkZxYawLbo0L42QQHttPoralrb1yR6yrM6K2zx54LlCjuZcCbSiKZyieOW2VFUcYr3YMPD6Ba1u7VuDgSvreeTxBcacOFDOtEhAdp6zYpb53OShlXRNBdfhdS2ExdsUEU8Qwaq2TNTG8JFW1h2LvIfMeXMnRiKOBCGPKFSuNVHvrj3UO49QGAeffpPqhG1IyhHMP1_Xp1KEKEM6LllfUh-NE8cHed2qTFCXp_fLuajn73fejm5uvt_6r4MJ_pBaL69_9cPG0gCA7L7AktXrdXv_9MSJONvpfCO4iCFy-s61oEZ4jPMcxBNk6W8wfr9zHzY39d7uC4KmsiNhCEFDWMEGZMEHFCxRntX4ulaEQbF83bS3LPnP2C9AgcpnILU16Cw5RCylXfqIr7VAW38Na0po0EEi4SA6CEl6j-5okNzxL3am-t7rOcrjhlp_OE_hfOgJhLFvTtObkjEv8tmLvcJVcDjCmlFRQya1-BxfHIEkGc1vfXGxhIyvKlLW0_BuIwFGzR0ySwYMhyljVfqZbb5Qs7fLC3RJ2vUPTm0zcK7lVpIYuXh72HY7c7WgR5Oo98Cb8neFBUEqx4VvIWNFaHPj7AUhVQRCcu4WSeR_hfACAE4QT8KwKURjhvnO7JEJYty6lmi77sJHKXtLQAbLkTJ_bkc-ubxaZPfqkro76XFG96nQIpJT_IU2HeB8eMihJ9V4bVsfYhZmG7IUBwnkKrrw7An2bHpw7osO5zQ7OHVkEuiTCkoq2KlyeNlLVxKA4a_rD8QSCoDv8hDQPjOnT_ClXdpz3KUU62-F_Q43BC5Re9d_XQFCeMeVbunjLkYpp2aqSBZQr-DRL1olDlhDO-xOXnNvVf3qcK6TgNoPgNr9EJqSA4sVFEqZuAOEhwsMPvDq8CLric9TQldwCFBOkZhefesH-V6o-gZV9WXkkgSUEaWDDBXUtiL15QDes5BvOaHguK7j4TiyyPUNpI5uGOX7UbXFgS9fqnEp3vGoP_n9mVGAv3D7sbGflmjZrZf_oBlX8manj1eSeiBUz3v0oQvHs8BNGo-F56LyQfdHrXXeIPdC3h_0_3pg9Oo3pJJ6QHpv2R3g8nIxHOOntpvEEl0USFYNiSIcswQWJ8HgUDcZxQuMy2vT4FEd40I_6OMJRgpNw3B-yZDSYDNiERsWAokHEasKrsKqe61Cqbc81ktN-H0fDpFeRglXaNcoYH_CIbc-splYgKNqtRoOocg3iUYXhpmK-fe76n086H9cgOJriGlphWzPbJO-IoBXz_a6yT-VqH_ZaVU13xjTa5x7hfMvNri0cmeLcWnH4Fxy7zty3x5ZMvGPPU_zvAAAA__-eJblI">