/runtime/src/libraries/Native/Unix/System.Native/pal_io.c(924,64): error G8742B11B: use of function '__builtin_alloca' is discouraged; there is no way to check for failure but failure may still occur, resulting in a possibly exploitable security vulnerability [-Werror,-Walloca] [/runtime/src/libraries/Native/build-native.proj]
      struct pollfd* pollfds = (struct pollfd*)(useStackBuffer ? alloca(bufferSize) : malloc(bufferSize));
                                                                 ^
  /usr/include/alloca.h:35:23: note: expanded from macro 'alloca'
  # define alloca(size)   __builtin_alloca (size)
                          ^
  1 error generated.