On 2/6/24 04:37, Richard Biener wrote:
The following avoids accessing out-of-bound vector elements when
native encoding a boolean vector with sub-BITS_PER_UNIT precision
elements. The error was basing the number of elements to extract
on the rounded up total byte size involved and the patch bases
everything on the total number of elements to extract instead.
As a side-effect this now consistently results in zeros in the
padding of the last encoded byte which also avoids the failure
mode seen in PR113576.
Bootstrapped and tested on x86_64-unknown-linux-gnu.
OK?
Thanks,
Richard.
PR middle-end/113576
* fold-const.cc (native_encode_vector_part): Avoid accessing
out-of-bound elements.
OK.
jeff
