#!/bin/sh

# This Source Code Form is subject to the terms of the Mozilla Public

# License, v. 2.0. If a copy of the MPL was not distributed with this

# file, You can obtain one at http://mozilla.org/MPL/2.0/.

"$REAL_DSYMUTIL" "$@"

ret=$?

if [ $ret -ne 139 ]; then

  exit $ret

fi

echo "$REAL_DSYMUTIL crashed. Trying to get a reduced testcase." >&2

tmpdir=$(mktemp -d)

trap "rm -rf $tmpdir" EXIT

# Get the library file name from the command line arguments. We assume

# it's the last argument that doesn't start with a dash.

for arg in "$@"; do

  case "$arg" in

  -*)

    ;;

  *)

    lib="$arg"

    ;;

  esac

done

last_obj=$("$REAL_DSYMUTIL" --verbose "$@" 2> /dev/null | sed -n "/trying to open/s/trying to open '\(.*\)'/\1/p" | tail -1)

case "$last_obj" in

"")

  echo "Could not produce a reduced testcase. Aborting." >&2

  # Ideally, we'd produce an archive with every .o and .a involved, but so

  # far, this case has never happened, so, meh.

  exit 139

  ;;

*.a\(*.o\))

  # The crash likely happened while reading one particular object in a library.

  # Create a new library with just that one object.

  archive=$(readlink -f "${last_obj%(*}")

  obj="${last_obj#*.a(}"

  obj="${obj%)}"

  (cd "$tmpdir"; ar x "$archive" "$obj")

  mkdir -p $tmpdir/crasher/$(dirname "$archive")

  (cd "$tmpdir"; ar cr "$tmpdir/crasher/$archive" "$obj")

  rm "$tmpdir/$obj"

  ;;

*)

  # The crash likely happened while reading one particular object.

  obj=$(readlink -f "$last_obj")

  mkdir -p "$tmpdir/crasher/$(dirname "$obj")"

  cp "$obj" "$tmpdir/crasher/$obj"

  ;;

esac

cp "$lib" "$tmpdir/crasher"

cat > "$tmpdir/crasher/run-me.sh" <

#!/bin/sh

DSYMUTIL="\${DSYMUTIL:-llvm-dsymutil}"

dir="\$(dirname \$0)"

\$DSYMUTIL -oso-prepend-path="\$dir" "\$dir/$(basename "$lib")"

exit \$?

EOF

chmod +x "$tmpdir/crasher/run-me.sh"

(cd "$tmpdir"/crasher; DSYMUTIL=/builds/worker/workspace/build/src/llvm-dsymutil/bin/llvm-dsymutil ./run-me.sh > /dev/null 2>&1)

if [ $? -eq 139 ]; then

  echo "Could reproduce with a reduced testcase. Creating an artifact." >&2

  mkdir -p "$HOME/artifacts"

  artifact=dsymutil-crasher.tar.xz

  tar -Jcf "$HOME/artifacts/$artifact" -C "$tmpdir" crasher/

  echo "Check the $artifact artifact." >&2

else

  echo "Could not reproduce with a reduced testcase. Sorry." >&2

fi

exit 139