Auto merge of #64438 - cuviper:beta-rollup, r=Mark-Simulacrum

[beta] Rollup backports

Cherry-picked:

- Permit unwinding through FFI by default #62603
- pprust: Do not print spaces before some tokens #63897
- Account for doc comments coming from proc macros without spans #63930
- Support "soft" feature-gating using a lint #64066
- Update xLTO compatibility table in rustc book. #64092
- Include compiler-rt in the source tarball #64240
- Update LLVM submodule #64317

r? @Mark-Simulacrum

1 files changed, 6 insertions, 0 deletions

diff --git a/src/test/codegen/c-variadic.rs b/src/test/codegen/c-variadic.rs
index 13be5ced27f..bb90a9653f5 100644
--- a/src/test/codegen/c-variadic.rs
+++ b/src/test/codegen/c-variadic.rs
@@ -2,6 +2,7 @@
 
 #![crate_type = "lib"]
 #![feature(c_variadic)]
+#![feature(unwind_attributes)]
 #![no_std]
 use core::ffi::VaList;
 
@@ -10,6 +11,7 @@ extern "C" {
     fn foreign_c_variadic_1(_: VaList, ...);
 }
 
+#[unwind(aborts)] // FIXME(#58794)
 pub unsafe extern "C" fn use_foreign_c_variadic_0() {
     // Ensure that we correctly call foreign C-variadic functions.
     // CHECK: invoke void (i32, ...) @foreign_c_variadic_0(i32 0)
@@ -24,20 +26,24 @@ pub unsafe extern "C" fn use_foreign_c_variadic_0() {
 
 // Ensure that we do not remove the `va_list` passed to the foreign function when
 // removing the "spoofed" `VaListImpl` that is used by Rust defined C-variadics.
+#[unwind(aborts)] // FIXME(#58794)
 pub unsafe extern "C" fn use_foreign_c_variadic_1_0(ap: VaList) {
     // CHECK: invoke void ({{.*}}*, ...) @foreign_c_variadic_1({{.*}} %ap)
     foreign_c_variadic_1(ap);
 }
 
+#[unwind(aborts)] // FIXME(#58794)
 pub unsafe extern "C" fn use_foreign_c_variadic_1_1(ap: VaList) {
     // CHECK: invoke void ({{.*}}*, ...) @foreign_c_variadic_1({{.*}} %ap, i32 42)
     foreign_c_variadic_1(ap, 42i32);
 }
+#[unwind(aborts)] // FIXME(#58794)
 pub unsafe extern "C" fn use_foreign_c_variadic_1_2(ap: VaList) {
     // CHECK: invoke void ({{.*}}*, ...) @foreign_c_variadic_1({{.*}} %ap, i32 2, i32 42)
     foreign_c_variadic_1(ap, 2i32, 42i32);
 }
 
+#[unwind(aborts)] // FIXME(#58794)
 pub unsafe extern "C" fn use_foreign_c_variadic_1_3(ap: VaList) {
     // CHECK: invoke void ({{.*}}*, ...) @foreign_c_variadic_1({{.*}} %ap, i32 2, i32 42, i32 0)
     foreign_c_variadic_1(ap, 2i32, 42i32, 0i32);