<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=http://email.email.llvm.org/c/eJzdWEtz2zYQ_jXSZYccipRk6aCDrEfiiVNnbKWdnjwgAEpoSIAFQUXOr-8uSD1sq67bpEmnHpoigMW-gP2wi9SIh4nbSMhMnpvPSq-Bs7qSwHOG385AKuGTynMpOvEMKikLpMkfQNSSRpWDDRJiXyead6JpZxg1D-_El_T43qXKJSwEEt-UThldwWWdZdJWsDImr2DWEMNbmZfwf_hrzHayKHPmZCeZsRqdpTvJohmpnK05us7kQlroXLR-AuDoHCd3pW3HOvFIadeJx57oYt56GT-Sds4zUXtWAF7olYBOMofO4LIzmDfsQPuuqGULVrraalLvEoh1_JTHDe4Qe8ommbXqJbMr3Bgj5IS2Hfiimb7vHHfoxEt8_C5rLdh7ZWuUgKzW_Dj7qIjXYS_qsuWiMvRYUUjtpABTO9qjn439VB39dOIkMr1gSp9jfxR79Oxh9n5TnzKrWCHRtqrOHSgN5PzKwVYxWBuRGuxFdrXNO8kUNs6VFX40SrfjobFrbH3B_3f9fv_i1-32C4n33O-U5vsg7MVhFEbELpWZsZKMzBiGlKAIRPtLCi8cAePXyUpWGf0auRvL9ObdqP_-ILd5oyfL2oHJINh6xsUDOo5vlJZnPdLoucWAxuCGXkL6NiMrZtfSkS670fB-2A9KHuRK17tgreuWZIMKCyiMkN5ZpanUrhm6wmBghD1zZWkIVa4r3ATLFBexQRZTa4GQpYUSuALwZjbD1fCzGCHNs1nxMgzxlauUPMJxzZfnNIuXvShM9lb8i1J6Ye8bSBn2v481fy3nxJ47mUtOgflvCZgdTCgwChV5GzmHFMD9qEBWL1AlcUuGH4-1fYlX47rZx_n0nEGmdIRstWAUoodw6IWtCKSJn9jtIyfoJTgCAec9CJxVJYbzGeshwMPXBSb9DYLCypztAlQAgn0D34az5nwNhKpYmssgs1IeW3m-LQJUTGUKgYK6ObMi2LK8loFGRMOZhJBBhpDiO4C-Ql6WjcxWQOCjFUrFIcBXkMstNuOmoSr8QaFFZpFBUBrEXToq5l7brGBuE0hrtcGGNoEln2ICEdAAzvJHIB2PxqJ9ilVeqVpjciICR2Zg23lcCXhZk6eCYR-7ai19x1pqtBA1EzKt12tpaYgylGS-FilBWpBxg15ga5zg4bMxShDK4PG3dEXZvMNhyX9Pfx3eRjeA_q1MbbkkuuP-bWLcryNtT499EHiTNcvRGQ94oBdfu9_bGU9eeEjktZAkv0239hN-vAbn-f0n9EoZ__QZ9_1Lypxb1iPfF2dijOSvI_2WFp-f8lwJuaMPfqrMq4gajQ-klRMYK61zY4YhJWRpJcKDFBjJ3BrfhQH4d0IMawKLYZ8rBDrojUkMrlVQWuMkAQJBTIaW8aBFV2TWD-Ow10CJwiRYccRIhKfa40TGdzu0hsu27kAJpw1uchQnFFtrUznFqY8JgazXEMzv7_Hkun87_XlxP_9leruM72fLq_vp3XuUihINHOzwcDnuizTNQjR8B61jDuh5mid5nH-cLEGKMCegLrHn-vrn9_tuITNGCWYDd3-eQynU31Lxpo2WO4Vrhqku-to77eHMufMd9hwJfb1yTyd14mS_17AvJHExlp_M8g3gprCuAsx1JSW3z-iTGdFjPfIC_XeHnR8j9Ty_H6XLHnifKvAy2D6jfgywT4cfdS8wXcMypt0IOW6-8CQUKfHC1M2DDn3UmtILqqrkTvIaU0aqLjF_pMF3zS3In89uojuzBlGUEuxm6r5Uay9MEFkQYH1tWEnKRagPUzSlt21udajFflxVdWqeNnSrMIUjSEJRrf28NvC-4jmpOT9cL6Z3C5iuVtPZW1i9XcDy5vr65pern97A8up6cQerG999-fEN3C4-3NyuDsH8weLZY7isCESbJA0dXFGRTyvAqspwRScT2FpDxTHFdgcCK8GntTjK3IHlK13w6AAYybQvxk_g_p_xqDb_YCW-1Xrsi_uumCRinIxZl9VuY-xkzmRh9J1mn2S3tvnkyf2Ccps6DXHfU5BipdH-0PH9G4I9xWZV1RLdvhwko3HS3UyidDjmUT8VssfSUdZnw148EOPoIuKjpB-NuzlLZV5N6N4pjrX8DJ4FHRODeffrNVCTOIrx6V1E0WA46IWjEe-NslGUyF4mxGCA1Z_EiigPiQ9dnXTtxLPEzKbCQYKU6jiIWw0DXMpJc1HWdcrlvtGC22x_1xkzHG5vVvfY0N4mIV79tFp9gJwVqWBQ06ZWGvZXfFAyqqscXZ-SdKJvLn5OZnW9nRNv5B96ooZk>53893</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang, C++2a] killed due to result of NTTP lambda used in template parameters list of other NTTP lambda
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

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

<pre>
    the following cause clang to be killed, seemingly due to it hanging
```c++
File Edit Options Buffers Tools C++ Help                                                                                                                                                                                                     
template<auto n>
struct holder {
  constexpr holder(int) {}
};

template<
    auto Id = [](int n = 0) { return n; },
    auto Other = []<holder<Id()> n = 0>() { return n; } //cause
>
void func() {
    Other(); //if commented out, works
}

int main() {
    func();
}
```

same result in latest via godbolt (url: https://godbolt.org/z/K4447Yvvz)
Since clang 12.0.0 (before, failed to compile for other reason: https://godbolt.org/z/hranhK84M)

output of -v for my machine
```
clang version 13.0.0
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-pc-linux-gnu/10.3.0
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-pc-linux-gnu/11.1.0
Found candidate GCC installation: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/10.3.0
Found candidate GCC installation: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.1.0
Selected GCC installation: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.1.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
Found CUDA installation: /opt/cuda, version 11.2
 "/usr/bin/clang-13" -cc1 -triple x86_64-pc-linux-gnu -emit-obj -mrelax-all --mrelax-relocations -disable-free -disable-llvm-verifier -discard-value-names -main-file-name file.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -v -fcoverage-compilation-dir=/tmp/tmp.6pcqbY6R0O -resource-dir /usr/lib/clang/13.0.0 -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.1.0/../../../../include/c++/11.1.0 -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.1.0/../../../../include/c++/11.1.0/x86_64-pc-linux-gnu -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.1.0/../../../../include/c++/11.1.0/backward -internal-isystem /usr/lib/clang/13.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.1.0/../../../../x86_64-pc-linux-gnu/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -std=c++2a -fdeprecated-macro -fdebug-compilation-dir=/tmp/tmp.6pcqbY6R0O -ferror-limit 19 -stack-protector 2 -fgnuc-version=4.2.1 -fno-implicit-modules -fcxx-exceptions -fexceptions -fcolor-diagnostics -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/file-94dbbf.o -x c++ file.cpp
clang -cc1 version 13.0.0 based upon LLVM 13.0.0 default target x86_64-pc-linux-gnu
ignoring nonexistent directory "/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.1.0/../../../../x86_64-pc-linux-gnu/include"
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.1.0/../../../../include/c++/11.1.0
 /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.1.0/../../../../include/c++/11.1.0/x86_64-pc-linux-gnu
 /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/11.1.0/../../../../include/c++/11.1.0/backward
 /usr/lib/clang/13.0.0/include
 /usr/local/include
 /usr/include
End of search list.
clang-13: error: unable to execute command: Killed
clang-13: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 13.0.0
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
clang-13: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-13: note: diagnostic msg: /tmp/file-8eb4d9.cpp
clang-13: note: diagnostic msg: /tmp/file-8eb4d9.sh
clang-13: note: diagnostic msg: 

********************
```
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJzdWFtz27YS_jX0yw45EinJ8oMeZF0ST5w6E6vt9MkDAqCEBgR4QFCR--vPLkhdbKs-Pm2anDkemgKBxd6A_bCL3IrHid9IKKzW9qsya-CsqSVwzbDtLeQSviitpYjSGdRSlkijH0E0kkaVhw0SYl_Um0e9aTTqtQ-P0mt6Qu9SaQkLgcR3lVfW1HDdFIV0Nays1TXMWmJ4L3UF_w9_rdlelpVmXkbZjDXoLBNli3ak9q7h6DqrhXQQXXZ-AuDoHC93levGonSsjI_Sq0B0Oe-8jI2sm_NC1J4VQBB6IyDK5hANr6PhvGUHJnT1OrbgpG-cIfWugVinz3nc4Q5xp2yyWadeNrvBjTFGTmjbgS-aGfrOcYcoXeITdllnwd4rW6sEFI3hx9lHRYIOe1HXHRdVoMfKUhovBdjG0x79at2X-uinEyeR6SVT5hz7o9ijZw-z95v6lFnNSom21Y32oAyQ82sPW8VgbUVusRfZNU5H2RQ23lc1Nlqlu_HEujV-_YH_HwaDweVv2-0fJD5wv1eG74Ownya9pEfscllYJ8nIgmFICYpAtL-i8MIRsGGdnGS1NW-Ru3HMbD6MBx8Pcts3erJqPNgC4m1gXD6i4_hGGXnWI62eWwxoDG7oZ6RvO7Jibi096bIbjx5Gg7jisVam2cVr03QkG1RYQGmFDM6qbK127dANBgMj7JkrR0OoclPjJljmuIgtstjGCIQsI5TAFYB3sxmuRpjFCGlezEqXSYIvrXLyCMc1X57TLF32e0m2t-IflNJP-t9Aymjwfaz5z3JO7LmXWnIKzH9KwOxgQolRqMjbyDmhAB70SmT1ClWWdmTYeKrta7xa181-nk_PGWQrT8jWCEYhegiHftKJQJr0md0hcuJ-hiMQc96H2DtVYTifsR5iPHx9bPPfIS6d1GwXowIQ7z_wbTlrz9dYqJrlWsaFk_L4pfW2jFExVSgECurmzIl4y3QjY4OIhjMJIeMCISV0ALUSXlWtzE5AHKIVKsUhxles5RY_0_ZD1fiDQsvCIYO4soi7dFTMg7ZFyfwmls4Zix_Gxo58iglETAM4KxyBdDxah_YpVgelGoPJiYg9mYHfPuBKzKuGPBWPBtjVGBk61tKghaiZkHmzXktHQ5ShZPO1yAnS4oJb9AJb44QAn61RglAGj7-lL6v2nYwq_q_8t9Hn3h2gf2vbOC6J7rh_2xgP60jbM2AfxMFkwzQ64xEP9PLv7vduxrMXHhK6EZLkd-nWfsKP1-A8v_8JvXLGv3zFff-aMueW9cj31ZkYI_ptpN_S4vNTXiohd9Tgp8q8iajV-EBae4Gx0jk3ZRhSQlZOIjxIgZHMnQ1dGID_TYhhTeAw7LVCoIP-FYnBtYorZ70kQCCIKdAyHnfoiswGSZr0WyhRmAQrjhiJ8NQEnCj4bofWcNnVHSjh9INbjeKEYmtja6849TEhkPUa4vnDA55cD--nvywe5r9OPy_Th9ny5mF6_xGlokQLBzsCXF4NRJ4XCRq-g84xB_Q8zZMCzj9NliBHmBPQVNhze_vLx323kAWjBLOFuz_PoRTq76h4M9bIncI1w1QXfR2c9njm3PkOe46Evl2555OiNNvvNexLSFyK5SdzfAO4KZyvAXNdScntC_psRvRYj7xC_91h58dIPc_vR-myB97nCrwOti-onwLs8-En3QtM17CM6TaCxs2XnIQiJV6YugXQoUZjKL2gqkruJG8wZaTqEvNHGvzQ3oL8-ew2ugtnEUUpwW6n7ku17sIEkQUBNtSGtaRchPowRVNm2-VWh1rsx1VVp-YZS7cKUziCJJT1OszrAu9vPCc156fbxfR-AdPVajp7D6v3C1je3d7e_Xrz0ztY3twu7mF1F7qvf34Hnxef7j6vDsH8yeHZY7msCUTbJA0dXFORTyvA6tpyRScTuMZAzTHF9gcCJyGktTjK_IHlG13w5AAYy3wgrp7B_V_jUW_-wkp8q_XYF_cXYpKJq-yKXXjltZxEw-suRmf7K7uURcN5d0G43-LdpQiG3U-r1SfQrMwFg4bWRhnY31RBxag88HQLSHFJ9O39xcmsi8bpybNbDOU3TZ5gdBEUYD3T_VCS8DseKYQAdd1IXNzlMBtfZRebyVUxwAbrp1IU6Si7vGT5oC_l5VU6SDnLRxea5VLXZCAeM0Z-hcCCDqPh_EJN0l6KT_-y1xuOhv1kPOb9cTHuZbJfCDEcYoUosWrSCelB1ysXbhJUwuynxkEyrz4O4nZEEJDBn8SfNX5j3WTOZGnNvWFf5EUQPwnq_xvb13Er">