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Avoid bitwise and in boolean expression (#4603)

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In #3404 a logical && was replaced with a bitwise & to ensure that
both side-effecting arguments were evaluated. However, this leads to
warnings from some compilers (leading to the OSS-Fuzz build breaking,
in particular).

This change reworks the relevant code so that both arguments to the
logical && are evaluated into temporaries.
This commit is contained in:
Alastair Donaldson 2021-10-29 20:36:51 +01:00 committed by GitHub
parent e3c7098104
commit 97d4495600
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 3 additions and 3 deletions
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6
source/val/validate_cfg.cpp
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@ -659,9 +659,9 @@ spv_result_t ValidateStructuredSelections(
// Mark the upcoming blocks as seen now, but only error out if this block
// was missing a merge instruction and both labels hadn't been seen
// previously.
const bool both_unseen =
seen.insert(true_label).second & seen.insert(false_label).second;
if (!merge && both_unseen) {
const bool true_label_unseen = seen.insert(true_label).second;
const bool false_label_unseen = seen.insert(false_label).second;
if (!merge && true_label_unseen && false_label_unseen) {
return _.diag(SPV_ERROR_INVALID_CFG, terminator)
<< "Selection must be structured";
}