diff --git a/src/libstd/sys/common/libunwind.rs b/src/libstd/sys/common/libunwind.rs index da7ebbf4ed3..04f677a90c4 100644 --- a/src/libstd/sys/common/libunwind.rs +++ b/src/libstd/sys/common/libunwind.rs @@ -142,6 +142,9 @@ extern "C" { -> _Unwind_Reason_Code; pub fn _Unwind_DeleteException(exception: *mut _Unwind_Exception); + + #[unwind] + pub fn _Unwind_Resume(exception: *mut _Unwind_Exception) -> !; } // ... and now we just providing access to SjLj counterspart diff --git a/src/libstd/sys/common/unwind/gcc.rs b/src/libstd/sys/common/unwind/gcc.rs index 361cef08c11..5ee14d9f57a 100644 --- a/src/libstd/sys/common/unwind/gcc.rs +++ b/src/libstd/sys/common/unwind/gcc.rs @@ -231,3 +231,10 @@ pub mod eabi { } } } + +#[cfg(all(target_os="windows", target_arch = "x86", target_env="gnu", not(test)))] +#[lang = "eh_unwind_resume"] +#[unwind] +unsafe extern fn rust_eh_unwind_resume(panic_ctx: *mut u8) -> ! { + uw::_Unwind_Resume(panic_ctx as *mut uw::_Unwind_Exception); +} diff --git a/src/libstd/sys/common/unwind/seh64_gnu.rs b/src/libstd/sys/common/unwind/seh64_gnu.rs index 9478678fda9..92f059d68e1 100644 --- a/src/libstd/sys/common/unwind/seh64_gnu.rs +++ b/src/libstd/sys/common/unwind/seh64_gnu.rs @@ -190,17 +190,10 @@ unsafe extern fn rust_eh_personality( ExceptionContinueSearch } -// The `resume` instruction, found at the end of the landing pads, and whose job -// is to resume stack unwinding, is typically lowered by LLVM into a call to -// `_Unwind_Resume` routine. To avoid confusion with the same symbol exported -// from libgcc, we redirect it to `rust_eh_unwind_resume`. -// Since resolution of this symbol is done by the linker, `rust_eh_unwind_resume` -// must be marked `pub` + `#[no_mangle]`. (Can we make it a lang item?) - -#[lang = "eh_unwind_resume"] #[cfg(not(test))] +#[lang = "eh_unwind_resume"] #[unwind] -unsafe extern fn rust_eh_unwind_resume(panic_ctx: LPVOID) { +unsafe extern fn rust_eh_unwind_resume(panic_ctx: LPVOID) -> ! { let params = [panic_ctx as ULONG_PTR]; RaiseException(RUST_PANIC, EXCEPTION_NONCONTINUABLE,