tbeu / matio / #1230

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travis-ci

Avoid wraparound in opaque metadata ndims bounds check

dim_start + ndims + 1 wraps for a file-supplied ndims near UINT32_MAX (and near SIZE_MAX on 32-bit size_t in ParseOpaqueMetadata), so the check passes and ndims dimensions are copied out of a short metadata buffer. Compare ndims against the remaining value count instead.

As reported by https://github.com/tbeu/matio/pull/382

2 of 2 new or added lines in 1 file covered. (100.0%)

13560 of 16424 relevant lines covered (82.56%)

51090.22 hits per line