<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/118964>118964</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            libc: FEnvImpl.h `error: static assertion failed due to requirement`
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            build-problem,
            libc
      </td>
    </tr>

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

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

<pre>
    ```
FAILED: projects/libc/utils/gpu/server/CMakeFiles/llvmlibc_rpc_server.dir/build/source/libc/src/stdio/printf_core/converter.cpp.o
/opt/sccache//sccache /build/source/build-llvm/bin/clang++ -DLIBC_COPT_ARRAY_ARG_LIST -DLIBC_COPT_MEMCPY_USE_EMBEDDED_TINY -DLIBC_COPT_PRINTF_DISABLE_INDEX_MODE -DLIBC_COPT_PRINTF_DISABLE_STRERROR -DLIBC_COPT_PRINTF_DISABLE_WRITE_INT -DLIBC_COPT_USE_C_ASSERT -DLIBC_NAMESPACE=__llvm_libc_20_0_0_ -DLIBC_TYPES_LONG_DOUBLE_IS_FLOAT64 -I/build/source/build-llvm/tools/clang/stage2-bins/projects/libc/utils/gpu/server -I/build/source/libc/utils/gpu/server -I/build/source/libc -I/build/source/libc/include -fstack-protector-strong -Wformat -Werror=format-security -Wno-unused-command-line-argument -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -ffile-prefix-map=/build/source/build-llvm/tools/clang/stage2-bins=../../../../ -ffile-prefix-map=/build/source/= -no-canonical-prefixes -O2 -DNDEBUG -g1 -std=c++17 -MD -MT projects/libc/utils/gpu/server/CMakeFiles/llvmlibc_rpc_server.dir/build/source/libc/src/stdio/printf_core/converter.cpp.o -MF projects/libc/utils/gpu/server/CMakeFiles/llvmlibc_rpc_server.dir/build/source/libc/src/stdio/printf_core/converter.cpp.o.d -o projects/libc/utils/gpu/server/CMakeFiles/llvmlibc_rpc_server.dir/build/source/libc/src/stdio/printf_core/converter.cpp.o -c /build/source/libc/src/stdio/printf_core/converter.cpp
In file included from /build/source/libc/src/stdio/printf_core/converter.cpp:20:
In file included from /build/source/libc/src/stdio/printf_core/converter_atlas.h:29:
In file included from /build/source/libc/src/stdio/printf_core/float_dec_converter.h:17:
In file included from /build/source/libc/src/__support/float_to_string.h:17:
In file included from /build/source/libc/src/__support/FPUtil/dyadic_float.h:12:
In file included from /build/source/libc/src/__support/FPUtil/FEnvImpl.h:31:
/build/source/libc/src/__support/FPUtil/x86_64/FEnvImpl.h:377:5: error: static assertion failed due to requirement 'sizeof(fenv_t) == sizeof(__llvm_libc_20_0_0_::fputil::internal::FPState)': Internal floating point state does not match the public fenv_t type.
  377 | sizeof(fenv_t) == sizeof(internal::FPState),
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/source/libc/src/__support/FPUtil/x86_64/FEnvImpl.h:377:20: note: expression evaluates to '28 == 32'
  377 |     sizeof(fenv_t) == sizeof(internal::FPState),
      | ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
```

full log: https://llvm-jenkins.debian.net/job/llvm-toolchain-binaries/architecture=i386,distribution=unstable,label=i386/2194/console
Regression range: 9a4c5a59d4ec..dd7a3d4d798e
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJzMV81u2zoWfhp6Q9CQKduyF14ollUYiOPAduHJSqDJI5ktReqSlJvcxTz7gJLzd6e30-ltgSqBEpKH33f-dHjInJOVBligyQ2aZAPW-rOxC_ekLuC8hcHJiKcFmkbX3yjN0_XtKkNxihtrPgH3DtFcyRNHNG-9VGFYNS2iuQN7AYtovtywz5BLBZ2outRBvLANL3qRoZBB7NRKJcI-01oOr6jOdm8vpEE0b6zUviy4sUGEG30B68EOedMMDYpSRHPT-LCBc8bPQeh1gL9G002QoFcYSB1gFdMVojeI3mCS3a5vlsVye38o0t0ufSjS3Yfidr0_vFvarDbL-4fi435VrDY3qyxbZcVhfffwTuh-t7475EW23qc3t6tifZet_lVsttnqW1L7w261221335I57taHgPdep6DMskj3-9XuZeEu3az29-lyheKsKILVRRcOGhXh51ns8HC_2he327sPRbb92Cm7L_LbbXqYjjFZ_08_emO6VLh6MneeVUDJSWrXBfF7UudveH5sx7fBpOaqFYBJ6Tzjn0ljjQfujSXOW6MrTI6lsTXzmBzBWmNRnPUTxAFvrfRPmBy1Ia1uHQjCTV0zLYiSGgizVVuDDnsF80C8rAGTrMi3u8M6fyj224-7Lh4Uk_J-vcSk1IY4qJn2khOpPdjGOOml0ZiUF-nkSSrpn4jUgcCRsxQC9Bvd3vC8zLW6apkVIAi7MKnYFUPDF0yOTKkg-ugte2dIwyyrwQfXHr9Y6SE4ROrKYXLkzHnyR8vCzlo6J3VFSglKEKmll0zJP8E6TBoQnSU9sDK66l4Bof_G5rPgsIZ50ikQTJeYHGXdKMmlJyVTyp-taatz2GQuYEEQ90V6fiYCStYq34NrA48cGk_8UwPdlCYXaX3LFBHeBCsEKPBAvrLi2qoC50nAtzJkw7E3lvRlxnX-D6YqYCLMSy1Ae9YH5sg9E6RmTycgrXZt0xjrQWBSCskqbZyX3BFuVCAry1bzsC_kT_jrghzz7O24lApIY6GUj6RmDYqzf_TdxdlwiGj-l9d386A4w0Qbwpk2WnKmrlvAYbKlmGR32erm4wdMqhEmzgsUZ9f4jhJMNhkmm8PveGhgssl_R72GAhPzOyqGCf_qQfr_IqEoXWsckg9f66_ApTX1zwGPUxqhOP1lJAXzirnhORDNfwFRqQzzhQBevNoVyEbJPyIrimtleqHwpujL3M-Gz-8_eqkQzcUTE5IXHV1PQn8-Sb7Sl3XdqI4gHvUEPwb1OJsW0_F_YSbBNZPQ-l6P1BS7UPw5Zs6B7U6BkkkFAosWsDfYwh-ttNAd_ogmTv4JpkR0VoK-FB7ROQ61Ns7wy8pXWrJgSZyWTfju-_-7jkCz6yi_33vmAdE5okFDvL4u487hUle4MVL7TlnAwoDD2nhcM8_P2J8BN-1JSY57rXA4OocoSjGOkwSjZIm_Q--_V2nZQYUnQKHJ6t_f_fySAHZVITgAukg-NhZcd7LDhamWeXAhcogmdPZsZUyDZ996JDw_0St_tfubTkJROuozEFegwTIPIsTr7S0NRWnZKoWVqYKVZ-8bF5ToLkMhw8gn0J-ldkMBJ8n0UENw4Cdzel4PjQQ_M6lD78Cs7I4VZvlZhsa4tYDiTMazKaJLIUP9OLXhA-j6TOfZSQGiS8VOoF4Eczqaj_sS6owCFKU7qJ69b5muuojM2ZhP2GQuxsCHQyESFouxSOYzGIhFLObxnA1gMUrieDyP4lE8OC8Ym5UwSfiMJzzhJU0S4Gw8ozwp42Q05wO5oBEdj2g0HcXRZESH87gUk2g-onwKk9lpgsYR1EyqYbB9aGw1kM61sBiNZvPpeNDZ4bpLMqV9v9VYc1JQI0pDMCntk5KGS7RddB48tZVD40hJ590rrpdewaKTjlP8mp8YTaMfKCtoGg1aqxbvI1xJf25PQ27qazifo3rtJsKNJ9gXYno18bKg_wkAAP__4ZFeEA">