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Fix Wbitwise-instead-of-logical warnings 

`a || b` only evaluates b if a is false. `a | b` always evaluates
both a and b. If a and b are of type bool, || is usually what you
want, so clang now warns on `|` where both arguments are of type bool.

This warning fires twice in harfbuzz. In both cases, `|` is used
intentionally, with a comment explaining this.

Slightly reorder the code a bit to make the compiler happy, and to
make it obvious even without a comment that both calls should be evaluated.

No intended behavior change.
This commit is contained in:
Nico Weber 2021-10-12 10:42:43 -04:00 committed by Behdad Esfahbod
parent b621c4fc29
commit 96299d70ed
1 changed files with 6 additions and 6 deletions
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12
src/hb-ot-layout-gpos-table.hh
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@ -1220,9 +1220,9 @@ struct PairSet
record_size);
if (record)
{
/* Note the intentional use of "|" instead of short-circuit "||". */
if (valueFormats[0].apply_value (c, this, &record->values[0], buffer->cur_pos()) |
valueFormats[1].apply_value (c, this, &record->values[len1], buffer->pos[pos]))
bool applied_first = valueFormats[0].apply_value (c, this, &record->values[0], buffer->cur_pos());
bool applied_second = valueFormats[1].apply_value (c, this, &record->values[len1], buffer->pos[pos]);
if (applied_first || applied_second)
buffer->unsafe_to_break (buffer->idx, pos + 1);
if (len2)
pos++;
@ -1560,9 +1560,9 @@ struct PairPosFormat2
if (unlikely (klass1 >= class1Count || klass2 >= class2Count)) return_trace (false);
const Value *v = &values[record_len * (klass1 * class2Count + klass2)];
/* Note the intentional use of "|" instead of short-circuit "||". */
if (valueFormat1.apply_value (c, this, v, buffer->cur_pos()) |
valueFormat2.apply_value (c, this, v + len1, buffer->pos[skippy_iter.idx]))
bool applied_first = valueFormat1.apply_value (c, this, v, buffer->cur_pos());
bool applied_second = valueFormat2.apply_value (c, this, v + len1, buffer->pos[skippy_iter.idx]);
if (applied_first || applied_second)
buffer->unsafe_to_break (buffer->idx, skippy_iter.idx + 1);
buffer->idx = skippy_iter.idx;