diff options
Diffstat (limited to 'src/3rdparty/libjpeg/src/jdapistd.c')
| -rw-r--r-- | src/3rdparty/libjpeg/src/jdapistd.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/3rdparty/libjpeg/src/jdapistd.c b/src/3rdparty/libjpeg/src/jdapistd.c index 38bd1110d9..695a620099 100644 --- a/src/3rdparty/libjpeg/src/jdapistd.c +++ b/src/3rdparty/libjpeg/src/jdapistd.c @@ -4,7 +4,7 @@ * This file was part of the Independent JPEG Group's software: * Copyright (C) 1994-1996, Thomas G. Lane. * libjpeg-turbo Modifications: - * Copyright (C) 2010, 2015-2018, 2020, D. R. Commander. + * Copyright (C) 2010, 2015-2020, D. R. Commander. * Copyright (C) 2015, Google, Inc. * For conditions of distribution and use, see the accompanying README.ijg * file. @@ -319,6 +319,8 @@ read_and_discard_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines) { JDIMENSION n; my_master_ptr master = (my_master_ptr)cinfo->master; + JSAMPLE dummy_sample[1] = { 0 }; + JSAMPROW dummy_row = dummy_sample; JSAMPARRAY scanlines = NULL; void (*color_convert) (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, @@ -329,6 +331,10 @@ read_and_discard_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines) if (cinfo->cconvert && cinfo->cconvert->color_convert) { color_convert = cinfo->cconvert->color_convert; cinfo->cconvert->color_convert = noop_convert; + /* This just prevents UBSan from complaining about adding 0 to a NULL + * pointer. The pointer isn't actually used. + */ + scanlines = &dummy_row; } if (cinfo->cquantize && cinfo->cquantize->color_quantize) { @@ -532,6 +538,8 @@ jpeg_skip_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines) * decoded coefficients. This is ~5% faster for large subsets, but * it's tough to tell a difference for smaller images. */ + if (!cinfo->entropy->insufficient_data) + cinfo->master->last_good_iMCU_row = cinfo->input_iMCU_row; (*cinfo->entropy->decode_mcu) (cinfo, NULL); } } |