Grégoire Kubler authored 5 months ago and Maxence Naud committed 4 months ago

otherwise dereferencing bestMatch later on in the function resulted in a segfault

This reverts commit d5c01e1c, reversing
changes made to e878ce91.

Christophe Guillon authored 9 months ago and Maxence Naud committed 8 months ago

Define a Tensor with undefined dims by explicitly setting mSize to 0.
Provide undefined() method which must be used instead of empty()
to test whether a Tensor as associated dimensions and can be used
for forwarding dimensions downward.
This disambiguates from defined scalar Tensor which actually have
empty dimensions, but size of 1.
Note that as soon as a Tensor with undefined dimensions is resized,
it's dimensions are permanently defined (though may still change).

This change solves issues in operators forwardDims() when
input values are scalar, i.e. !undefined() and empty().