Fixes this -fno-sanitize-recover=undefined fail,
hb-ot-map.hh:188:1: runtime error: load of value 4294967294, which is not a valid value for type 'hb_ot_map_feature_flags_t'
#0 0x7f62bfa9b227 in operator&=(hb_ot_map_feature_flags_t&, hb_ot_map_feature_flags_t) /home/ebrahim/Desktop/harfbuzz/src/./hb-ot-map.hh:188:1
#1 0x7f62bfa9b227 in hb_ot_map_builder_t::compile(hb_ot_map_t&, hb_ot_shape_plan_key_t const&) /home/ebrahim/Desktop/harfbuzz/src/hb-ot-map.cc:194
#2 0x7f62bface650 in hb_ot_shape_planner_t::compile(hb_ot_shape_plan_t&, hb_ot_shape_plan_key_t const&) /home/ebrahim/Desktop/harfbuzz/src/hb-ot-shape.cc:108:7
#3 0x7f62bfacec1e in hb_ot_shape_plan_t::init0(hb_face_t*, hb_shape_plan_key_t const*) /home/ebrahim/Desktop/harfbuzz/src/hb-ot-shape.cc:225:11
#4 0x7f62bfae1318 in hb_shape_plan_create2 /home/ebrahim/Desktop/harfbuzz/src/hb-shape-plan.cc:232:7
#5 0x7f62bfae1d2a in hb_shape_plan_create_cached2 /home/ebrahim/Desktop/harfbuzz/src/hb-shape-plan.cc:489:33
#6 0x7f62bfae2527 in hb_shape_full /home/ebrahim/Desktop/harfbuzz/src/hb-shape.cc:135:33
#7 0x55ed360b6588 in shape_options_t::shape(hb_font_t*, hb_buffer_t*, char const**) /home/ebrahim/Desktop/harfbuzz/util/./options.hh:242:10
#8 0x55ed360b5d9c in shape_consumer_t<output_buffer_t>::consume_line(char const*, unsigned int, char const*, char const*) /home/ebrahim/Desktop/harfbuzz/util/./shape-consumer.hh:67:19
#9 0x55ed360b549f in main_font_text_t<shape_consumer_t<output_buffer_t>, 2147483647, 0>::main(int, char**) /home/ebrahim/Desktop/harfbuzz/util/./main-font-text.hh:81:16
#10 0x55ed360b4e23 in main /home/ebrahim/Desktop/harfbuzz/util/hb-shape.cc:189:17
#11 0x7f62bf104ee2 in __libc_start_main (/usr/lib/libc.so.6+0x26ee2)
#12 0x55ed3608f7ad in _start (/home/ebrahim/Desktop/harfbuzz/util/.libs/lt-hb-shape+0xd7ad)
The old hb-ot-tag.cc functions, `hb_ot_tags_from_script` and
`hb_ot_tag_from_language`, are now wrappers around a new function:
`hb_ot_tags`. It converts a script and a language to arrays of script
tags and language tags. This will make it easier to add new script tags
to scripts, like 'dev3'. It also allows for language fallback chains;
nothing produces more than one language yet though.
Where the old functions return the default tags 'DFLT' and 'dflt',
`hb_ot_tags` returns an empty array. The caller is responsible for
using the default tag in that case.
The new function also adds a new private use subtag syntax for script
overrides: "x-hbscabcd" requests a script tag of 'abcd'.
The old hb-ot-layout.cc functions,`hb_ot_layout_table_choose_script` and
`hb_ot_layout_script_find_language` are now wrappers around the new
functions `hb_ot_layout_table_select_script` and
`hb_ot_layout_script_select_language`. They are essentially the same as
the old ones plus a tag count parameter.
Closes#495.
Some clang versions define static_assert as a macro apparently, so we cannot
redefine it...
This reverts commit 94bfea0ce6.
This reverts commit 4e62627831.
This one:
map->mask = (1 << (next_bit + bits_needed)) - (1 << next_bit);
before the fix, the shift was done as an int, causing overflow
if it ever got to 1 << 31. Sprinkle 'u's around.
Fixes https://bugs.chromium.org/p/chromium/issues/detail?id=634805
Ebrahim Byagowi
Behdad Esfahbod
David Corbett
ThePhD
Jonathan Kew