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Dont crash if harfbuzz return null info or positions pointers

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Kovid Goyal 2017-11-12 17:18:49 +05:30
parent dd0080d3ce
commit dad9444db0
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kitty/fonts.c
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@ -482,6 +482,7 @@ shape_run(Cell *first_cell, index_type num_cells, Font *font) {
unsigned int info_length, positions_length, num_glyphs; unsigned int info_length, positions_length, num_glyphs;
hb_glyph_info_t *info = hb_buffer_get_glyph_infos(harfbuzz_buffer, &info_length); hb_glyph_info_t *info = hb_buffer_get_glyph_infos(harfbuzz_buffer, &info_length);
hb_glyph_position_t *positions = hb_buffer_get_glyph_positions(harfbuzz_buffer, &positions_length); hb_glyph_position_t *positions = hb_buffer_get_glyph_positions(harfbuzz_buffer, &positions_length);
if (!info || !positions) return;
num_glyphs = MIN(info_length, positions_length); num_glyphs = MIN(info_length, positions_length);
#if 0 #if 0
// You can also generate this easily using hb-shape --show-flags --show-extents --cluster-level=1 --shapers=ot /path/to/font/file text // You can also generate this easily using hb-shape --show-flags --show-extents --cluster-level=1 --shapers=ot /path/to/font/file text