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Fix minor issue.

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This commit is contained in:
Themaister 2011-11-01 21:28:32 +01:00
parent 0c3f6ed66b
commit 34b5994842
1 changed files with 7 additions and 3 deletions
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10
rewind.c
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@ -43,12 +43,15 @@ static inline size_t nearest_pow2_size(size_t v)
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
if (sizeof(v) * CHAR_BIT >= 16)
#if SIZE_MAX >= 0xffffu
v |= v >> 8;
if (sizeof(v) * CHAR_BIT >= 32)
#endif
#if SIZE_MAX >= 0xfffffffflu
v |= v >> 16;
if (sizeof(v) * CHAR_BIT >= 64)
#endif
#if SIZE_MAX >= 0xffffffffffffffffllu
v |= v >> 32;
#endif
v++;
size_t next = v;
@ -154,6 +157,7 @@ static void generate_delta(state_manager_t *state, const void *data)
const uint32_t *new_state = data;
state->buffer[state->top_ptr++] = 0; // For each separate delta, we have a 0 value sentinel in between.
state->top_ptr &= state->buf_size_mask;
// Check if top_ptr and bottom_ptr crossed each other, which means we need to delete old cruft.
if (state->top_ptr == state->bottom_ptr)