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opj_tcd_dc_level_shift_decode: avoid int32 overflow when prec == 31. Fixes https...
author
Even Rouault
<even.rouault@spatialys.com>
Sun, 30 Jul 2017 13:22:24 +0000
(15:22 +0200)
committer
Even Rouault
<even.rouault@spatialys.com>
Sun, 30 Jul 2017 13:22:24 +0000
(15:22 +0200)
src/lib/openjp2/tcd.c
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diff --git
a/src/lib/openjp2/tcd.c
b/src/lib/openjp2/tcd.c
index 08c5a765a12910c26243ecaeefc2a5ad9186ec0e..1213bffea73ae900289492d7f60a4f016533a92e 100644
(file)
--- a/
src/lib/openjp2/tcd.c
+++ b/
src/lib/openjp2/tcd.c
@@
-1883,7
+1883,7
@@
static OPJ_BOOL opj_tcd_dc_level_shift_decode(opj_tcd_t *p_tcd)
l_max = (1 << (l_img_comp->prec - 1)) - 1;
} else {
l_min = 0;
- l_max = (
1 << l_img_comp->prec) - 1
;
+ l_max = (
OPJ_INT32)((1U << l_img_comp->prec) - 1)
;
}
l_current_ptr = l_tile_comp->data;