ipc, openpgp: Bump quickcheck to 1.0.3.

  - Adapt to the new API:

    - Gen is now a struct, not a Trait, and replaces StdThreadGen.

    - The rand re-export has been removed.  As a consequence, we need
      our own function to generate an arbitrary value from a range.

31 files changed, 176 insertions, 123 deletions

diff --git a/Cargo.lock b/Cargo.lock
index ca97e8e5..4cd60d63 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2253,12 +2253,22 @@ dependencies = [
 
 [[package]]
 name = "quickcheck"
-version = "0.9.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a44883e74aa97ad63db83c4bf8ca490f02b2fc02f92575e720c8551e843c945f"
+checksum = "588f6378e4dd99458b60ec275b4477add41ce4fa9f64dcba6f15adccb19b50d6"
 dependencies = [
- "rand 0.7.3",
- "rand_core 0.5.1",
+ "rand 0.8.4",
+]
+
+[[package]]
+name = "quickcheck_macros"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b22a693222d716a9587786f37ac3f6b4faedb5b80c23914e7303ff5a1d8016e9"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -2702,7 +2712,9 @@ dependencies = [
  "num-bigint-dig",
  "p256",
  "quickcheck",
+ "quickcheck_macros",
  "rand 0.7.3",
+ "rand 0.8.4",
  "rand_core 0.6.3",
  "regex",
  "regex-syntax",
diff --git a/ipc/Cargo.toml b/ipc/Cargo.toml
index 265592b8..f409943c 100644
--- a/ipc/Cargo.toml
+++ b/ipc/Cargo.toml
@@ -48,7 +48,7 @@ lalrpop = ">=0.17"
 
 [dev-dependencies]
 clap = "2.33"
-quickcheck = { version = "0.9", default-features = false }
+quickcheck = { version = "1", default-features = false }
 
 [lib]
 bench = false
diff --git a/ipc/src/sexp.rs b/ipc/src/sexp.rs
index a362232b..73a4fd1e 100644
--- a/ipc/src/sexp.rs
+++ b/ipc/src/sexp.rs
@@ -315,7 +315,7 @@ impl TryFrom<&mpi::Ciphertext> for Sexp {
 
 #[cfg(test)]
 impl Arbitrary for Sexp {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         if f32::arbitrary(g) < 0.7 {
             Sexp::String(String_::arbitrary(g))
         } else {
@@ -417,7 +417,7 @@ impl Deref for String_ {
 
 #[cfg(test)]
 impl Arbitrary for String_ {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         if bool::arbitrary(g) {
             Self::new(Vec::arbitrary(g).into_boxed_slice())
         } else {
diff --git a/openpgp/Cargo.toml b/openpgp/Cargo.toml
index 7e8c0e07..29a553b2 100644
--- a/openpgp/Cargo.toml
+++ b/openpgp/Cargo.toml
@@ -86,8 +86,9 @@ rand = { version = "0.7", features = ["wasm-bindgen"] }
 lalrpop = ">=0.17"
 
 [dev-dependencies]
-quickcheck = { version = "0.9", default-features = false }
-rand = { version = "0.7", default-features = false }
+quickcheck = { version = "1", default-features = false }
+quickcheck_macros = { version = "1", default-features = false }
+rand = { version = "0.8" }
 rpassword = "5.0"
 criterion = { version = "0.3.4", features = ["html_reports"] }
 
diff --git a/openpgp/src/armor.rs b/openpgp/src/armor.rs
index eb6bc65f..0f72181d 100644
--- a/openpgp/src/armor.rs
+++ b/openpgp/src/armor.rs
@@ -83,7 +83,7 @@ assert_send_and_sync!(Kind);
 
 #[cfg(test)]
 impl Arbitrary for Kind {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         use self::Kind::*;
         match u8::arbitrary(g) % 5 {
             0 => Message,
diff --git a/openpgp/src/cert.rs b/openpgp/src/cert.rs
index 8d125e00..770f9414 100644
--- a/openpgp/src/cert.rs
+++ b/openpgp/src/cert.rs
@@ -4389,8 +4389,8 @@ mod test {
 
     #[test]
     fn set_validity_period_two_uids() -> Result<()> {
-        use quickcheck::{Arbitrary, StdThreadGen};
-        let mut gen = StdThreadGen::new(16);
+        use quickcheck::{Arbitrary, Gen};
+        let mut gen = Gen::new(16);
         let p = &P::new();
 
         let userid1 = UserID::arbitrary(&mut gen);
diff --git a/openpgp/src/crypto/mpi.rs b/openpgp/src/crypto/mpi.rs
index ecff49ac..c586e3fa 100644
--- a/openpgp/src/crypto/mpi.rs
+++ b/openpgp/src/crypto/mpi.rs
@@ -22,8 +22,6 @@ use std::borrow::Cow;
 
 #[cfg(test)]
 use quickcheck::{Arbitrary, Gen};
-#[cfg(test)]
-use rand::Rng;
 
 use crate::types::{
     Curve,
@@ -259,7 +257,7 @@ impl Hash for MPI {
 
 #[cfg(test)]
 impl Arbitrary for MPI {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         loop {
             let buf = <Vec<u8>>::arbitrary(g);
 
@@ -580,9 +578,11 @@ impl Hash for PublicKey {
 
 #[cfg(test)]
 impl Arbitrary for PublicKey {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         use self::PublicKey::*;
-        match g.gen_range(0, 6) {
+        use crate::arbitrary_helper::gen_arbitrary_from_range;
+
+        match gen_arbitrary_from_range(0..6, g) {
             0 => RSA {
                 e: MPI::arbitrary(g),
                 n: MPI::arbitrary(g),
@@ -842,8 +842,10 @@ impl Hash for SecretKeyMaterial {
 
 #[cfg(test)]
 impl Arbitrary for SecretKeyMaterial {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
-        match g.gen_range(0, 6) {
+    fn arbitrary(g: &mut Gen) -> Self {
+        use crate::arbitrary_helper::gen_arbitrary_from_range;
+
+        match gen_arbitrary_from_range(0..6, g) {
             0 => SecretKeyMaterial::RSA {
                 d: MPI::arbitrary(g).into(),
                 p: MPI::arbitrary(g).into(),
@@ -969,8 +971,10 @@ impl Hash for Ciphertext {
 
 #[cfg(test)]
 impl Arbitrary for Ciphertext {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
-        match g.gen_range(0, 3) {
+    fn arbitrary(g: &mut Gen) -> Self {
+        use crate::arbitrary_helper::gen_arbitrary_from_range;
+
+        match gen_arbitrary_from_range(0..3, g) {
             0 => Ciphertext::RSA {
                 c: MPI::arbitrary(g),
             },
@@ -1062,8 +1066,10 @@ impl Hash for Signature {
 
 #[cfg(test)]
 impl Arbitrary for Signature {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
-        match g.gen_range(0, 4) {
+    fn arbitrary(g: &mut Gen) -> Self {
+        use crate::arbitrary_helper::gen_arbitrary_from_range;
+
+        match gen_arbitrary_from_range(0..4, g) {
             0 => Signature::RSA  {
                 s: MPI::arbitrary(g),
             },
diff --git a/openpgp/src/crypto/s2k.rs b/openpgp/src/crypto/s2k.rs
index 6e618e0c..0644816c 100644
--- a/openpgp/src/crypto/s2k.rs
+++ b/openpgp/src/crypto/s2k.rs
@@ -17,8 +17,6 @@ use std::fmt;
 
 #[cfg(test)]
 use quickcheck::{Arbitrary, Gen};
-#[cfg(test)]
-use rand::Rng;
 
 /// String-to-Key (S2K) specifiers.
 ///
@@ -366,21 +364,23 @@ impl fmt::Display for S2K {
 
 #[cfg(test)]
 impl Arbitrary for S2K {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
+        use crate::arbitrary_helper::gen_arbitrary_from_range;
+
         #[allow(deprecated)]
-        match g.gen_range(0, 7) {
+        match gen_arbitrary_from_range(0..7, g) {
             0 => S2K::Simple{ hash: HashAlgorithm::arbitrary(g) },
             1 => S2K::Salted{
                 hash: HashAlgorithm::arbitrary(g),
-                salt: g.gen(),
+                salt: [<u8>::arbitrary(g); 8],
             },
             2 => S2K::Iterated{
                 hash: HashAlgorithm::arbitrary(g),
-                salt: g.gen(),
-                hash_bytes: S2K::nearest_hash_count(g.gen()),
+                salt: [<u8>::arbitrary(g); 8],
+                hash_bytes: S2K::nearest_hash_count(Arbitrary::arbitrary(g)),
             },
             3 => S2K::Private {
-                tag: g.gen_range(100, 111),
+                tag: gen_arbitrary_from_range(100..111, g),
                 parameters: Option::<Vec<u8>>::arbitrary(g).map(|v| v.into()),
             },
             4 => S2K::Unknown {
@@ -388,11 +388,11 @@ impl Arbitrary for S2K {
                 parameters: Option::<Vec<u8>>::arbitrary(g).map(|v| v.into()),
             },
             5 => S2K::Unknown {
-                tag: g.gen_range(4, 100),
+                tag: gen_arbitrary_from_range(4..100, g),
                 parameters: Option::<Vec<u8>>::arbitrary(g).map(|v| v.into()),
             },
             6 => S2K::Unknown {
-                tag: g.gen_range(111, 256) as u8,
+                tag: gen_arbitrary_from_range(111..256, g) as u8,
                 parameters: Option::<Vec<u8>>::arbitrary(g).map(|v| v.into()),
             },
             _ => unreachable!(),
diff --git a/openpgp/src/fingerprint.rs b/openpgp/src/fingerprint.rs
index d60f3faa..cdb37ca2 100644
--- a/openpgp/src/fingerprint.rs
+++ b/openpgp/src/fingerprint.rs
@@ -345,10 +345,9 @@ impl Fingerprint {
 
 #[cfg(test)]
 impl Arbitrary for Fingerprint {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
-        use rand::Rng;
+    fn arbitrary(g: &mut Gen) -> Self {
         let mut fp = [0; 20];
-        fp.iter_mut().for_each(|p| *p = g.gen());
+        fp.iter_mut().for_each(|p| *p = Arbitrary::arbitrary(g));
         Fingerprint::V4(fp)
     }
 }
diff --git a/openpgp/src/keyid.rs b/openpgp/src/keyid.rs
index 6186d208..b4689488 100644
--- a/openpgp/src/keyid.rs
+++ b/openpgp/src/keyid.rs
@@ -400,7 +400,7 @@ impl KeyID {
 
 #[cfg(test)]
 impl Arbitrary for KeyID {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         KeyID::new(u64::arbitrary(g))
     }
 }
diff --git a/openpgp/src/lib.rs b/openpgp/src/lib.rs
index a8280d75..4cc96884 100644
--- a/openpgp/src/lib.rs
+++ b/openpgp/src/lib.rs
@@ -329,3 +329,36 @@ pub enum Error {
 }
 
 assert_send_and_sync!(Error);
+
+/// Provide a helper function that generates an arbitrary value from a given
+/// range.  Quickcheck > 1 does not re-export rand so we need to implement this
+/// ourselves.
+#[cfg(test)]
+mod arbitrary_helper {
+    use quickcheck::{Arbitrary, Gen};
+
+    pub(crate) fn gen_arbitrary_from_range<T>(
+        range: std::ops::Range<T>,
+        g: &mut Gen,
+    ) -> T
+    where
+        T: Arbitrary
+            + std::cmp::PartialOrd
+            + std::ops::Sub<Output = T>
+            + std::ops::Rem<Output = T>
+            + std::ops::Add<Output = T>
+            + Copy,
+    {
+        if !range.is_empty() {
+            let m = range.end - range.start;
+            // The % operator calculates the remainder, which is negative for
+            // negative inputs, not the modulus.  This actually calculates the
+            // modulus by making sure the result is positive.  The primitive
+            // integer types implement .rem_euclid for that, but there is no way
+            // to constrain this function to primitive types.
+            range.start + (T::arbitrary(g) % m + m) % m
+        } else {
+            panic!()
+        }
+    }
+}
diff --git a/openpgp/src/packet/compressed_data.rs b/openpgp/src/packet/compressed_data.rs
index 76ec27ee..d0564a11 100644
--- a/openpgp/src/packet/compressed_data.rs
+++ b/openpgp/src/packet/compressed_data.rs
@@ -99,11 +99,13 @@ impl From<CompressedData> for Packet {
 
 #[cfg(test)]
 impl Arbitrary for CompressedData {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
-        use rand::Rng;
+    fn arbitrary(g: &mut Gen) -> Self {
         use crate::serialize::SerializeInto;
+        use crate::arbitrary_helper::gen_arbitrary_from_range;
+
         loop {
-            let a = CompressionAlgorithm::from(g.gen_range(0, 4));
+            let a =
+                CompressionAlgorithm::from(gen_arbitrary_from_range(0..4, g));
             if a.is_supported() {
                 let mut c = CompressedData::new(a);
                 // We arbitrarily chose to create packets with
diff --git a/openpgp/src/packet/key.rs b/openpgp/src/packet/key.rs
index 405baa13..4ddb1aeb 100644
--- a/openpgp/src/packet/key.rs
+++ b/openpgp/src/packet/key.rs
@@ -1613,28 +1613,28 @@ impl<P, R> Arbitrary for super::Key<P, R>
           R: KeyRole, R: Clone,
           Key4<P, R>: Arbitrary,
 {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         Key4::arbitrary(g).into()
     }
 }
 
 #[cfg(test)]
 impl Arbitrary for Key4<PublicParts, PrimaryRole> {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         Key4::<PublicParts, UnspecifiedRole>::arbitrary(g).into()
     }
 }
 
 #[cfg(test)]
 impl Arbitrary for Key4<PublicParts, SubordinateRole> {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         Key4::<PublicParts, UnspecifiedRole>::arbitrary(g).into()
     }
 }
 
 #[cfg(test)]
 impl Arbitrary for Key4<PublicParts, UnspecifiedRole> {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         let mpis = mpi::PublicKey::arbitrary(g);
         Key4 {
             common: Arbitrary::arbitrary(g),
@@ -1651,22 +1651,21 @@ impl Arbitrary for Key4<PublicParts, UnspecifiedRole> {
 
 #[cfg(test)]
 impl Arbitrary for Key4<SecretParts, PrimaryRole> {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         Key4::<SecretParts, UnspecifiedRole>::arbitrary(g).into()
     }
 }
 
 #[cfg(test)]
 impl Arbitrary for Key4<SecretParts, SubordinateRole> {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         Key4::<SecretParts, UnspecifiedRole>::arbitrary(g).into()
     }
 }
 
 #[cfg(test)]
 impl Arbitrary for Key4<SecretParts, UnspecifiedRole> {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
-        use rand::Rng;
+    fn arbitrary(g: &mut Gen) -> Self {
         use PublicKeyAlgorithm::*;
         use mpi::MPI;
 
@@ -1702,7 +1701,7 @@ impl Arbitrary for Key4<SecretParts, UnspecifiedRole> {
             _ => unreachable!("only valid algos, normalizes to these values"),
         }.into();
 
-        if g.gen() {
+        if <bool>::arbitrary(g) {
             secret.encrypt_in_place(&Password::from(Vec::arbitrary(g)))
                 .unwrap();
         }
@@ -1747,7 +1746,7 @@ mod tests {
 
     #[test]
     fn key_encrypt_decrypt() -> Result<()> {
-        let mut g = quickcheck::StdThreadGen::new(256);
+        let mut g = quickcheck::Gen::new(256);
         let p: Password = Vec::<u8>::arbitrary(&mut g).into();
 
         let check = |key: Key4<SecretParts, UnspecifiedRole>| -> Result<()> {
diff --git a/openpgp/src/packet/literal.rs b/openpgp/src/packet/literal.rs
index f534f51c..3cc6150e 100644
--- a/openpgp/src/packet/literal.rs
+++ b/openpgp/src/packet/literal.rs
@@ -176,7 +176,7 @@ impl From<Literal> for Packet {
 
 #[cfg(test)]
 impl Arbitrary for Literal {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         let mut l = Literal::new(DataFormat::arbitrary(g));
         l.set_body(Vec::<u8>::arbitrary(g));
         while let Err(_) = l.set_filename(&Vec::<u8>::arbitrary(g)) {
diff --git a/openpgp/src/packet/marker.rs b/openpgp/src/packet/marker.rs
index edeb03ae..f32d385c 100644
--- a/openpgp/src/packet/marker.rs
+++ b/openpgp/src/packet/marker.rs
@@ -30,7 +30,7 @@ impl From<Marker> for Packet {
 
 #[cfg(test)]
 impl Arbitrary for Marker {
-    fn arbitrary<G: Gen>(_: &mut G) -> Self {
+    fn arbitrary(_: &mut Gen) -> Self {
         Self::default()
     }
 }
diff --git a/openpgp/src/packet/mod.rs b/openpgp/src/packet/mod.rs
index 4e3b344c..e33ee469 100644
--- a/openpgp/src/packet/mod.rs
+++ b/openpgp/src/packet/mod.rs
@@ -508,9 +508,10 @@ impl fmt::Debug for Packet {
 
 #[cfg(test)]
 impl Arbitrary for Packet {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
-        use rand::Rng;
-        match g.gen_range(0, 15) {
+    fn arbitrary(g: &mut Gen) -> Self {
+        use crate::arbitrary_helper::gen_arbitrary_from_range;
+
+        match gen_arbitrary_from_range(0..15, g) {
             0 => Signature::arbitrary(g).into(),
             1 => OnePassSig::arbitrary(g).into(),
             2 => Key::<key::PublicParts, key::UnspecifiedRole>::arbitrary(g)
@@ -573,7 +574,7 @@ assert_send_and_sync!(Common);
 
 #[cfg(test)]
 impl Arbitrary for Common {
-    fn arbitrary<G: Gen>(_: &mut G) -> Self {
+    fn arbitrary(_: &mut Gen) -> Self {
         // XXX: Change if this gets interesting fields.
         Common::default()
     }
diff --git a/openpgp/src/packet/one_pass_sig.rs b/openpgp/src/packet/one_pass_sig.rs
index 41903901..68baf4f2 100644
--- a/openpgp/src/packet/one_pass_sig.rs
+++ b/openpgp/src/packet/one_pass_sig.rs
@@ -171,14 +171,14 @@ impl<'a> std::convert::TryFrom<&'a Signature> for OnePassSig3 {
 
 #[cfg(test)]
 impl Arbitrary for super::OnePassSig {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         OnePassSig3::arbitrary(g).into()
     }
 }
 
 #[cfg(test)]
 impl Arbitrary for OnePassSig3 {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         let mut ops = OnePassSig3::new(SignatureType::arbitrary(g));
         ops.set_hash_algo(HashAlgorithm::arbitrary(g));
         ops.set_pk_algo(PublicKeyAlgorithm::arbitrary(g));
diff --git a/openpgp/src/packet/pkesk.rs b/openpgp/src/packet/pkesk.rs
index 50ec187a..6cbc8886 100644
--- a/openpgp/src/packet/pkesk.rs
+++ b/openpgp/src/packet/pkesk.rs
@@ -195,14 +195,14 @@ impl From<PKESK3> for Packet {
 
 #[cfg(test)]
 impl Arbitrary for super::PKESK {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         PKESK3::arbitrary(g).into()
     }
 }
 
 #[cfg(test)]
 impl Arbitrary for PKESK3 {
-    fn arbitrary<G: Gen>(g: &mut G) -> Self {
+    fn arbitrary(g: &mut Gen) -> Self {
         let (ciphertext, pk_algo) = loop {
             let ciphertext = Ciphertext::arbitrary(g);
             if let Some(pk_algo) = ciphertext.pk_algo() {
diff --git a/openpgp/src/packet/signature.rs b/openpgp/src/packet/signature.rs
index 81ec439f..0b8cde02 100644
--- a/openpgp/src/packet/signature.rs
+++ b/