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Pin panic-in-drop=abort test to old pass manager

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This commit is contained in:
Nikita Popov 2021-09-25 12:39:20 +02:00
parent 31834434a0
commit 51203dc1c4
1 changed files with 8 additions and 1 deletions
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9
src/test/codegen/panic-in-drop-abort.rs
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@ -1,8 +1,15 @@
// compile-flags: -Z panic-in-drop=abort -O
// compile-flags: -Z panic-in-drop=abort -O -Z new-llvm-pass-manager=no
// Ensure that unwinding code paths are eliminated from the output after
// optimization.
// This test uses -Z new-llvm-pass-manager=no, because the expected optimization does not happen
// on targets using SEH exceptions (i.e. MSVC) anymore. The core issue is that Rust promises that
// the drop_in_place() function can't unwind, but implements it in a way that *can*, because we
// currently go out of our way to allow longjmps, which also use the unwinding mechanism on MSVC
// targets. We should either forbid longjmps, or not assume nounwind, making this optimization
// incompatible with the current behavior of running cleanuppads on longjmp unwinding.
// CHECK-NOT: {{(call|invoke).*}}should_not_appear_in_output
#![crate_type = "lib"]