./miri many-seeds <command>:
Runs <command> over and over again with different seeds for Miri. The MIRIFLAGS
variable is set to its original value appended with ` -Zmiri-seed=$SEED` for
-many different seeds.
+many different seeds. The MIRI_SEEDS variable controls how many seeds are being
+tried; MIRI_SEED_START controls the first seed to try.
./miri bench <benches>:
Runs the benchmarks from bench-cargo-miri in hyperfine. hyperfine needs to be installed.
fi
;;
many-seeds)
- for SEED in $(seq 0 255); do
+ MIRI_SEED_START=${MIRI_SEED_START:-0} # default to 0
+ MIRI_SEEDS=${MIRI_SEEDS:-256} # default to 256
+ for SEED in $(seq $MIRI_SEED_START $(( $MIRI_SEED_START + $MIRI_SEEDS - 1 )) ); do
echo "Trying seed: $SEED"
MIRIFLAGS="$MIRIFLAGS -Zlayout-seed=$SEED -Zmiri-seed=$SEED" $@ || { echo "Failing seed: $SEED"; break; }
done
# Build a sysroot and set MIRI_SYSROOT to use it. Arguments are passed to `cargo miri setup`.
build_sysroot() {
if ! MIRI_SYSROOT="$($CARGO run $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/cargo-miri/Cargo.toml -- miri setup --print-sysroot "$@")"; then
+ # Run it again so the user can see the error.
+ $CARGO run $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/cargo-miri/Cargo.toml -- miri setup "$@"
echo "'cargo miri setup' failed"
exit 1
fi