tree 985eccabb701965eb3485648135796f1ffc71e13
parent 75d4870747a9886b024a3a86d70e6b6f275950ae
author Wan-Teh Chang <wtc@google.com> 1707850209 -0800
committer GitHub <noreply@github.com> 1707850209 -0800
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Print unprintable item->type in diagnostic message

In avifDecoderGenerateImageGridTiles(), replace unprintable characters
in item->type with '.' and also print the hex values of item->type in
parentheses.

For example, if item->type is four NUL characters ('\0'), avifdec prints
the following diagnostic message:

Before:
  Diagnostics:
   * Tile item ID 5 has an unknown item type ''

After:
  Diagnostics:
   * Tile item ID 5 has an unknown item type '....' (00000000)