https://bugs.llvm.org/show_bug.cgi?id=32720
Bug ID: 32720
Summary: -Wconsumed emits a false warning on a state change
following a loop
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Static Analyzer
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Here is a repro case. The consumed annotation analysis is affected by an
unrelated simple loop.
$ clang++ --version
clang version 5.0.0
$ cat >foo.cc <<EOF
struct __attribute__((consumable(unconsumed))) Foo {
void consume() __attribute__((set_typestate(consumed))) {}
};
void bar(Foo foo) {
for (int i = 0; i < 1; ++i) {}
foo.consume();
}
EOF
$ clang++ -Wconsumed -c foo.cc
foo.cc:7:26: warning: state of variable 'foo' must match at the entry and exit
of loop [-Wconsumed]
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