http://llvm.org/bugs/show_bug.cgi?id=21389
Bug ID: 21389
Summary: detect non-strick-weak-order where one is required
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Static Analyzer
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
The static analyzer should flag this sort of code:
std::nth_element(
id_map.begin(),
id_map.begin() + num_ids,
id_map.end(), [](const pair<Id, float> &lhs,
const pair<Id, float> &rhs) {
return lhs.second <= rhs.second;
});
because the lambda function may return true for a given pair of inputs, and
return true again if you switch lhs and rhs.
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