tree cd7863a159b4c8dd691aa280efee56158e1ee42e
parent c01c977c9c6e56faf709400547c9b085b8972024
author Tom Sepez <tsepez@chromium.org> 1435691935 -0700
committer Tom Sepez <tsepez@chromium.org> 1435691935 -0700

Redo range check in CPDF_SampledFunc::v_Call().

The current |bitpos1| calculation protects the passed argument to
_GetBits32(): |bitpos.ValueOrDie() + j * m_nBitsPerSample|, but doesn't
account for adding in the sample length in that routine.

Also bound bits per sample to something reasonable to avoid undefined
behaviour on the shift to compute the max value.

BUG=471990
R=jun_fang@foxitsoftware.com

Review URL: https://codereview.chromium.org/1219663003.