#!/bin/bash

set -euo pipefail

if [[ $# -ne 1 ]]; then
   echo "$0 {ubel.c}"
   exit 1
fi
SOURCE=$1
TEST_DIR=$(mktemp -d)
CFLAGS="-Wall -Wextra -pedantic -Werror"

# Delete temporary directory and exit with nonzero status.
function die
{
   echo "$1"

   rm -rf "$TEST_DIR"
   exit 1
}

for i in $(seq $(wc -l < "$SOURCE")); do
   sed -e "${i}d" "$SOURCE" > "$TEST_DIR/input.c"
   gcc $CFLAGS -c "$TEST_DIR/input.c" -o /dev/null \
      || die "Delete line $i failed (gcc)"
   clang $CFLAGS -c "$TEST_DIR/input.c" -o /dev/null \
      || die "Delete line $i failed (gcc)"
done

rm -rf "$TEST_DIR"
exit 0