in hash init code preserve constness

This causes warnings in some our builds as can be seen in some
smoke reports:

  zaphod32_hash.h:185:17: warning: cast discards '__attribute__((const))'
  qualifier from pointer target type [-Wcast-qual]

diff --git a/sbox32_hash.h b/sbox32_hash.h
index 9c98195..748256c 100644 (file)
--- a/sbox32_hash.h
+++ b/sbox32_hash.h
@@ -1421,7 +1421,7 @@ SBOX32_STATIC_INLINE void sbox32_seed_state96 (
     const U8 *seed_ch,
     U8 *state_ch
 ) {
-    U32 *seed= (U32 *)seed_ch;
+    const U32 *seed= (const U32 *)seed_ch;
     U32 *state= (U32 *)state_ch;
     U32 *state_cursor = state + 1;
     U32 *sbox32_end = state + 1 + (256 * SBOX32_MAX_LEN);

diff --git a/stadtx_hash.h b/stadtx_hash.h
index 3a5d81e..30278e3 100644 (file)
--- a/stadtx_hash.h
+++ b/stadtx_hash.h
@@ -118,7 +118,7 @@ STADTX_STATIC_INLINE void stadtx_seed_state (
     const U8 *seed_ch,
     U8 *state_ch
 ) {
-    U64 *seed= (U64 *)seed_ch;
+    const U64 *seed= (const U64 *)seed_ch;
     U64 *state= (U64 *)state_ch;
     /* first we apply two masks to each word of the seed, this means that
      * a) at least one of state[0] and state[2] is nonzero,

diff --git a/zaphod32_hash.h b/zaphod32_hash.h
index ec091f7..842b247 100644 (file)
--- a/zaphod32_hash.h
+++ b/zaphod32_hash.h
@@ -134,7 +134,7 @@ void zaphod32_seed_state (
     const U8 *seed_ch,
     U8 *state_ch
 ) {
-    U32 *seed= (U32 *)seed_ch;
+    const U32 *seed= (const U32 *)seed_ch;
     U32 *state= (U32 *)state_ch;
   
     /* hex expansion of pi, skipping first two digits. pi= 3.2[43f6...]*/