Arthur Eubanks aef36ebb3b [clang] Remove old Linux kernel workaround for ensuring stack space (#81533) ...

PR #71709 broke the Linux PIE build with `undefined symbol: alloca`
errors. With the newly included `clang/Basic/Builtins.h` in that PR, it
surfaces an issue with a combination of two previous patches.

26670dcba1 added `#undef alloca` so clang
builtins handling of alloca would work under MSVC (unsure if this is
still necessary).

194b6a3b1b added code that calls `alloca`
to workaround a Linux kernel < 4.1 bug. Given that Linux 4.1 was EOL in
2018, it should be ok to remove this workaround.

2024-02-12 13:41:58 -08:00

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