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Ignore unwinding edges when checking for unconditional recursion by tmiasko · Pu...
source link: https://github.com/rust-lang/rust/pull/92889
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The unconditional recursion lint determines if all execution paths
eventually lead to a self-recursive call.
The implementation always follows unwinding edges which limits its
practical utility. For example, it would not lint function f because a
call to g might unwind. It also wouldn't lint function h because an
overflow check preceding the self-recursive call might unwind:
pub fn f() {
g();
f();
}
pub fn g() { /* ... */ }
pub fn h(a: usize) {
h(a + 1);
}To avoid the issue, assume that terminators that might continue
execution along non-unwinding edges do so.
Fixes #78474.
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