tree 22bd4c0957d5c3c910f764bda1d22538192a0f71
parent 9c09d36ee7ac5304c16bc567f3d370c6f96cc7be
author James Zern <jzern@google.com> 1658887720 -0700
committer James Zern <jzern@google.com> 1658961426 -0700

y4m_input_fetch_frame: fix ubsan null/zero offset warning

reported under clang-13; use a while loop in file_read() to force a size
check before attempting to read. buf (aux_buf) may be may be null when
no conversion is necessary.

y4minput.c:29:43: runtime error: applying zero offset to null pointer

Bug: b/229626362
Change-Id: Ia3250d6ff9c325faf48eaa31f4399e20837f8f7b