diff options
Diffstat (limited to 'erts/emulator')
| -rw-r--r-- | erts/emulator/beam/erl_bits.c | 44 |
1 files changed, 22 insertions, 22 deletions
diff --git a/erts/emulator/beam/erl_bits.c b/erts/emulator/beam/erl_bits.c index d5b0e341a1..872ded4be7 100644 --- a/erts/emulator/beam/erl_bits.c +++ b/erts/emulator/beam/erl_bits.c @@ -1823,25 +1823,27 @@ erts_cmp_bits(byte* a_ptr, size_t a_offs, byte* b_ptr, size_t b_offs, size_t siz /* Compare bit by bit until a_ptr is aligned on byte boundary */ a = *a_ptr++; b = *b_ptr++; - for (;;) { - a_bit = get_bit(a, a_offs); - b_bit = get_bit(b, b_offs); - if ((cmp = (a_bit-b_bit)) != 0) { - return cmp; - } - if (--size == 0) - return 0; + if (a_offs) { + for (;;) { + a_bit = get_bit(a, a_offs); + b_bit = get_bit(b, b_offs); + if ((cmp = (a_bit-b_bit)) != 0) { + return cmp; + } + if (--size == 0) + return 0; - b_offs++; - if (b_offs == 8) { - b_offs = 0; - b = *b_ptr++; - } - a_offs++; - if (a_offs == 8) { - a_offs = 0; - a = *a_ptr++; - break; + b_offs++; + if (b_offs == 8) { + b_offs = 0; + b = *b_ptr++; + } + a_offs++; + if (a_offs == 8) { + a_offs = 0; + a = *a_ptr++; + break; + } } } @@ -1879,10 +1881,8 @@ erts_cmp_bits(byte* a_ptr, size_t a_offs, byte* b_ptr, size_t b_offs, size_t siz return 0; a_offs++; - if (a_offs == 8) { - a_offs = 0; - a = *a_ptr++; - } + ASSERT(a_offs < 8); + b_offs++; if (b_offs == 8) { b_offs = 0; |