Bad address on large iso

[michelp]

This fixes a Bad Address problem Tim found saving large matrices.

[eriknw]

Nice. So it was iso. Good guess.

It's weird that this PR is showing the other files for building wheels and SuiteSparse:GraphBLAS. Perhaps the branch for this PR is based on one that had all the commits from your previous PR, which got squashed when merged into main. Meh. Probably fine.

The changes look good to me. If you think it's ready, then don't forget to squash into a single commit.

[michelp]

Nice. So it was iso. Good guess.

It's weird that this PR is showing the other files for building wheels and SuiteSparse:GraphBLAS. Perhaps the branch for this PR is based on one that had all the commits from your previous PR, which got squashed when merged into main. Meh. Probably fine.

The changes look good to me. If you think it's ready, then don't forget to squash into a single commit.

Yeah I dunno what's up with that but it looks harmless. Squashing...