diff --git a/hash.rs b/hash.rs
index 2a43cbd2..61f9c80f 100644
--- a/hash.rs
+++ b/hash.rs
@@ -41,6 +41,7 @@ mod libcrypto {
 }
 
 pub fn evpmd(t: HashType) -> (EVP_MD, uint) {
+    #[fixed_stack_segment]; #[inline(never)];
     unsafe {
         match t {
             MD5 => (libcrypto::EVP_md5(), 16u),
@@ -61,6 +62,7 @@ pub struct Hasher {
 
 impl Hasher {
     pub fn new(ht: HashType) -> Hasher {
+        #[fixed_stack_segment]; #[inline(never)];
         let ctx = unsafe { libcrypto::EVP_MD_CTX_create() };
         let (evp, mdlen) = evpmd(ht);
         unsafe {
@@ -72,6 +74,7 @@ impl Hasher {
 
     /// Update this hasher with more input bytes
     pub fn update(&self, data: &[u8]) {
+        #[fixed_stack_segment]; #[inline(never)];
         do data.as_imm_buf |pdata, len| {
             unsafe {
                 libcrypto::EVP_DigestUpdate(self.ctx, pdata, len as c_uint)
@@ -84,6 +87,7 @@ impl Hasher {
      * initialization
      */
     pub fn final(&self) -> ~[u8] {
+        #[fixed_stack_segment]; #[inline(never)];
         let mut res = vec::from_elem(self.len, 0u8);
         do res.as_mut_buf |pres, _len| {
             unsafe {
@@ -96,6 +100,7 @@ impl Hasher {
 
 impl Drop for Hasher {
     fn drop(&self) {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             libcrypto::EVP_MD_CTX_destroy(self.ctx);
         }
diff --git a/hmac.rs b/hmac.rs
index 1e71ed1b..638e35c9 100644
--- a/hmac.rs
+++ b/hmac.rs
@@ -43,6 +43,7 @@ pub struct HMAC {
 }
 
 pub fn HMAC(ht: HashType, key: ~[u8]) -> HMAC {
+    #[fixed_stack_segment]; #[inline(never)];
     unsafe {
 
         let (evp, mdlen) = evpmd(ht);
@@ -67,6 +68,7 @@ pub fn HMAC(ht: HashType, key: ~[u8]) -> HMAC {
 
 impl HMAC {
     pub fn update(&mut self, data: &[u8]) {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             do data.as_imm_buf |pdata, len| {
                 HMAC_Update(&mut self.ctx, pdata, len as libc::c_uint)
@@ -75,6 +77,7 @@ impl HMAC {
     }
 
     pub fn final(&mut self) -> ~[u8] {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             let mut res = vec::from_elem(self.len, 0u8);
             let mut outlen: libc::c_uint = 0;
diff --git a/pkcs5.rs b/pkcs5.rs
index 400d3207..f9e2a48d 100644
--- a/pkcs5.rs
+++ b/pkcs5.rs
@@ -13,9 +13,9 @@ mod libcrypto {
     }
 }
 
-#[doc = "
-Derives a key from a password and salt using the PBKDF2-HMAC-SHA1 algorithm.
-"]
+/// Derives a key from a password and salt using the PBKDF2-HMAC-SHA1 algorithm.
+#[fixed_stack_segment]
+#[inline(never)]
 pub fn pbkdf2_hmac_sha1(pass: &str, salt: &[u8], iter: uint,
                         keylen: uint) -> ~[u8] {
     assert!(iter >= 1u);
diff --git a/pkey.rs b/pkey.rs
index 9b97721b..c6aac6d4 100644
--- a/pkey.rs
+++ b/pkey.rs
@@ -47,7 +47,7 @@ enum Parts {
     Both
 }
 
-#[doc = "Represents a role an asymmetric key might be appropriate for."]
+/// Represents a role an asymmetric key might be appropriate for.
 pub enum Role {
     Encrypt,
     Decrypt,
@@ -55,7 +55,7 @@ pub enum Role {
     Verify
 }
 
-#[doc = "Type of encryption padding to use."]
+/// Type of encryption padding to use.
 pub enum EncryptionPadding {
     OAEP,
     PKCS1v15
@@ -84,9 +84,10 @@ pub struct PKey {
     priv parts: Parts,
 }
 
-///Represents a public key, optionally with a private key attached.
+/// Represents a public key, optionally with a private key attached.
 impl PKey {
     pub fn new() -> PKey {
+        #[fixed_stack_segment]; #[inline(never)];
         PKey {
             evp: unsafe { libcrypto::EVP_PKEY_new() },
             parts: Neither,
@@ -94,6 +95,7 @@ impl PKey {
     }
 
     fn _tostr(&self, f: extern "C" unsafe fn(*EVP_PKEY, **mut u8) -> c_int) -> ~[u8] {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             let len = f(self.evp, ptr::null());
             if len < 0 as c_int { return ~[]; }
@@ -109,6 +111,7 @@ impl PKey {
     }
 
     fn _fromstr(&mut self, s: &[u8], f: extern "C" unsafe fn(c_int, **EVP_PKEY, **u8, c_uint) -> *EVP_PKEY) {
+        #[fixed_stack_segment]; #[inline(never)];
         do s.as_imm_buf |ps, len| {
             let evp = ptr::null();
             unsafe {
@@ -119,6 +122,7 @@ impl PKey {
     }
 
     pub fn gen(&mut self, keysz: uint) {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             let rsa = libcrypto::RSA_generate_key(
                 keysz as c_uint,
@@ -172,6 +176,7 @@ impl PKey {
      * Returns the size of the public key modulus.
      */
     pub fn size(&self) -> uint {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             libcrypto::RSA_size(libcrypto::EVP_PKEY_get1_RSA(self.evp)) as uint
         }
@@ -210,6 +215,7 @@ impl PKey {
      * call.
      */
     pub fn max_data(&self) -> uint {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             let rsa = libcrypto::EVP_PKEY_get1_RSA(self.evp);
             let len = libcrypto::RSA_size(rsa);
@@ -220,6 +226,7 @@ impl PKey {
     }
 
     pub fn encrypt_with_padding(&self, s: &[u8], padding: EncryptionPadding) -> ~[u8] {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             let rsa = libcrypto::EVP_PKEY_get1_RSA(self.evp);
             let len = libcrypto::RSA_size(rsa);
@@ -249,6 +256,7 @@ impl PKey {
     }
 
     pub fn decrypt_with_padding(&self, s: &[u8], padding: EncryptionPadding) -> ~[u8] {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             let rsa = libcrypto::EVP_PKEY_get1_RSA(self.evp);
             let len = libcrypto::RSA_size(rsa);
@@ -302,6 +310,7 @@ impl PKey {
     pub fn verify(&self, m: &[u8], s: &[u8]) -> bool { self.verify_with_hash(m, s, SHA256) }
 
     pub fn sign_with_hash(&self, s: &[u8], hash: HashType) -> ~[u8] {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             let rsa = libcrypto::EVP_PKEY_get1_RSA(self.evp);
             let mut len = libcrypto::RSA_size(rsa);
@@ -329,6 +338,7 @@ impl PKey {
     }
 
     pub fn verify_with_hash(&self, m: &[u8], s: &[u8], hash: HashType) -> bool {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             let rsa = libcrypto::EVP_PKEY_get1_RSA(self.evp);
 
@@ -352,6 +362,7 @@ impl PKey {
 
 impl Drop for PKey {
     fn drop(&self) {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             libcrypto::EVP_PKEY_free(self.evp);
         }
diff --git a/rand.rs b/rand.rs
index eedac4ab..dd6ee8a3 100644
--- a/rand.rs
+++ b/rand.rs
@@ -11,6 +11,7 @@ mod libcrypto {
 }
 
 pub fn rand_bytes(len: uint) -> ~[u8] {
+    #[fixed_stack_segment]; #[inline(never)];
     let mut out = vec::with_capacity(len);
 
     do out.as_mut_buf |out_buf, len| {
diff --git a/symm.rs b/symm.rs
index bc28624a..b9353fcc 100644
--- a/symm.rs
+++ b/symm.rs
@@ -59,6 +59,7 @@ pub enum Type {
 }
 
 fn evpc(t: Type) -> (EVP_CIPHER, uint, uint) {
+    #[fixed_stack_segment]; #[inline(never)];
     unsafe {
         match t {
             AES_128_ECB => (libcrypto::EVP_aes_128_ecb(), 16u, 16u),
@@ -86,6 +87,7 @@ pub struct Crypter {
 
 impl Crypter {
     pub fn new(t: Type) -> Crypter {
+        #[fixed_stack_segment]; #[inline(never)];
         let ctx = unsafe { libcrypto::EVP_CIPHER_CTX_new() };
         let (evp, keylen, blocksz) = evpc(t);
         Crypter { evp: evp, ctx: ctx, keylen: keylen, blocksize: blocksz }
@@ -96,6 +98,7 @@ impl Crypter {
      * data encrypted must be a multiple of block size.
      */
     pub fn pad(&self, padding: bool) {
+        #[fixed_stack_segment]; #[inline(never)];
         if self.blocksize > 0 {
             unsafe {
                 let v = if padding { 1 } else { 0 } as c_int;
@@ -108,6 +111,7 @@ impl Crypter {
      * Initializes this crypter.
      */
     pub fn init(&self, mode: Mode, key: &[u8], iv: &[u8]) {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             let mode = match mode {
                 Encrypt => 1 as c_int,
@@ -134,6 +138,7 @@ impl Crypter {
      * encrypted or decrypted bytes.
      */
     pub fn update(&self, data: &[u8]) -> ~[u8] {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             do data.as_imm_buf |pdata, len| {
                 let mut res = vec::from_elem(len + self.blocksize, 0u8);
@@ -162,6 +167,7 @@ impl Crypter {
      * Finish crypting. Returns the remaining partial block of output, if any.
      */
     pub fn final(&self) -> ~[u8] {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             let mut res = vec::from_elem(self.blocksize, 0u8);
 
@@ -179,6 +185,7 @@ impl Crypter {
 
 impl Drop for Crypter {
     fn drop(&self) {
+        #[fixed_stack_segment]; #[inline(never)];
         unsafe {
             libcrypto::EVP_CIPHER_CTX_free(self.ctx);
         }