<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/82467>82467</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Building libc on Ubuntu bionic fails with `error: no member named 'getc' in namespace '__llvm_libc_18_1_0_::internal'`
        </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>
    ```

/build/source/build-llvm/./bin/clang++ --target=x86_64-pc-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_18_1_0_ -I/build/source/libc -isystem 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 -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 -fdebug-prefix-map=/build/source/build-llvm/runtimes/runtimes-bins=../../../ -fdebug-prefix-map=/build/source/= -no-canonical-prefixes -ffile-prefix-map=/build/source/build-llvm/runtimes/runtimes-bins=../../../ -ffile-prefix-map=/build/source/= -no-canonical-prefixes -O3 -DNDEBUG -fpie -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -DLIBC_COPT_STDIO_USE_SYSTEM_FILE -std=gnu++17 -MD -MT libc/src/stdio/CMakeFiles/libc.src.stdio.fscanf.dir/fscanf.cpp.o -MF libc/src/stdio/CMakeFiles/libc.src.stdio.fscanf.dir/fscanf.cpp.o.d -o libc/src/stdio/CMakeFiles/libc.src.stdio.fscanf.dir/fscanf.cpp.o -c /build/source/libc/src/stdio/fscanf.cpp
In file included from /build/source/libc/src/stdio/fscanf.cpp:13:
/build/source/libc/src/stdio/scanf_core/vfscanf_internal.h:78:48: error: no member named 'getc' in namespace '__llvm_libc_18_1_0_::internal'
   78 |   scanf_core::Reader reader(stream, &internal::getc, internal::ungetc);
      | ~~~~~~~~~~^
1 error generated.
```
</pre>
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