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bitvector tweaks

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* libguile/arrays.c (scm_from_contiguous_typed_array):
* libguile/bytevectors.c (scm_uniform_array_to_bytevector): Error if the
  uniform element size is more than 8 bits, but not divisible by 8 --
  because our math could overflow in that case.

* module/ice-9/deprecated.scm (#\y): Indeed, #* is the valid bitvector
  syntax :)
This commit is contained in:
Andy Wingo 2009-10-16 11:59:30 +02:00
parent 96e15df109
commit b0fae4ecaa
3 changed files with 9 additions and 3 deletions
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5
libguile/arrays.c
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@ -241,12 +241,15 @@ scm_from_contiguous_typed_array (SCM type, SCM bounds, const void *bytes,
if (byte_len / (sz / 8) != rlen)
SCM_MISC_ERROR ("byte length and dimensions do not match", SCM_EOL);
}
else
else if (sz < 8)
{
/* byte_len ?= ceil (rlen * sz / 8) */
if (byte_len != (rlen * sz + 7) / 8)
SCM_MISC_ERROR ("byte length and dimensions do not match", SCM_EOL);
}
else
/* an internal guile error, really */
SCM_MISC_ERROR ("uniform elements larger than 8 bits must fill whole bytes", SCM_EOL);
memcpy (elts, bytes, byte_len);