Large TIFF input can generate "Cumulated memory allocation" errors, unlimited flag is ignored #4446
Description
** (process:47088): WARNING **: 10:54:13.498: tiff2vips: Cumulated memory allocation of 11580342 + 22930420 bytes is beyond the 20971520 cumulated byte limit defined in open options
tiff2vips: Failed to allocate memory for TIFFReadDirEntryArray (1 elements of 34464756 bytes each)
tiff2vips: Cumulated memory allocation of 11580342 + 22930420 bytes is beyond the 20971520 cumulated byte limit defined in open options
tiff2vips: Failed to allocate memory for TIFFReadDirEntryArray (1 elements of 34464756 bytes each)
tiffload: no property named `tiffSubifd'
Error handling file chunk: tiff2vips: Cumulated memory allocation of 11580342 + 22930420 bytes is beyond the 20971520 cumulated byte limit defined in open options
tiff2vips: Failed to allocate memory for TIFFReadDirEntryArray (1 elements of 34464756 bytes each)
tiff2vips: Cumulated memory allocation of 11580342 + 22930420 bytes is beyond the 20971520 cumulated byte limit defined in open options
tiff2vips: Failed to allocate memory for TIFFReadDirEntryArray (1 elements of 34464756 bytes each)
tiff2vips: Cumulated memory allocation of 11580342 + 22930420 bytes is beyond the 20971520 cumulated byte limit defined in open options
tiff2vips: Failed to allocate memory for TIFFReadDirEntryArray (1 elements of 34464756 bytes each)
tiff2vips: Cumulated memory allocation of 11580342 + 22930420 bytes is beyond the 20971520 cumulated byte limit defined in open options
tiff2vips: Cumulated memory allocation of 11580342 + 22930420 bytes is beyond the 20971520 cumulated byte limit defined in open options
tiff2vips: Failed to allocate memory for TIFFReadDirEntryArray (1 elements of 34464756 bytes each)
tiff2vips: Cumulated memory allocation of 11580342 + 22930420 bytes is beyond the 20971520 cumulated byte limit defined in open options
tiff2vips: Failed to allocate memory for TIFFReadDirEntryArray (1 elements of 34464756 bytes each)
tiff2vips: Cumulated memory allocation of 11580342 + 22930420 bytes is beyond the 20971520 cumulated byte limit defined in open options
tiff2vips: Failed to allocate memory for TIFFReadDirEntryArray (1 elements of 34464756 bytes each)