Remove c_unwind from tests and fix tests

48 files changed, 31 insertions, 75 deletions

diff --git a/src/tools/miri/tests/fail/function_calls/exported_symbol_bad_unwind1.rs b/src/tools/miri/tests/fail/function_calls/exported_symbol_bad_unwind1.rs
index 6d68b9a46d9..dc192d03196 100644
--- a/src/tools/miri/tests/fail/function_calls/exported_symbol_bad_unwind1.rs
+++ b/src/tools/miri/tests/fail/function_calls/exported_symbol_bad_unwind1.rs
@@ -1,5 +1,3 @@
-#![feature(c_unwind)]
-
 #[no_mangle]
 extern "C-unwind" fn unwind() {
     panic!();
diff --git a/src/tools/miri/tests/fail/function_calls/exported_symbol_bad_unwind2.rs b/src/tools/miri/tests/fail/function_calls/exported_symbol_bad_unwind2.rs
index e6aff19b02d..1382e9571f3 100644
--- a/src/tools/miri/tests/fail/function_calls/exported_symbol_bad_unwind2.rs
+++ b/src/tools/miri/tests/fail/function_calls/exported_symbol_bad_unwind2.rs
@@ -4,7 +4,7 @@
 //@normalize-stderr-test: "\n +[0-9]+:[^\n]+" -> ""
 //@normalize-stderr-test: "\n +at [^\n]+" -> ""
 //@[definition,both]error-in-other-file: aborted execution
-#![feature(rustc_attrs, c_unwind)]
+#![feature(rustc_attrs)]
 
 #[cfg_attr(any(definition, both), rustc_nounwind)]
 #[no_mangle]
diff --git a/src/tools/miri/tests/fail/panic/bad_unwind.rs b/src/tools/miri/tests/fail/panic/bad_unwind.rs
index 8c8a9f18cdc..5370485b2a6 100644
--- a/src/tools/miri/tests/fail/panic/bad_unwind.rs
+++ b/src/tools/miri/tests/fail/panic/bad_unwind.rs
@@ -1,5 +1,3 @@
-#![feature(c_unwind)]
-
 //! Unwinding when the caller ABI is "C" (without "-unwind") is UB.
 // The opposite version (callee does not allow unwinding) is impossible to
 // even write: MIR validation catches functions that have `UnwindContinue` but
diff --git a/src/tools/miri/tests/fail/terminate-terminator.rs b/src/tools/miri/tests/fail/terminate-terminator.rs
index 7c672828030..465625c7572 100644
--- a/src/tools/miri/tests/fail/terminate-terminator.rs
+++ b/src/tools/miri/tests/fail/terminate-terminator.rs
@@ -7,8 +7,6 @@
 // Enable MIR inlining to ensure that `TerminatorKind::UnwindTerminate` is generated
 // instead of just `UnwindAction::Terminate`.
 
-#![feature(c_unwind)]
-
 struct Foo;
 
 impl Drop for Foo {
diff --git a/src/tools/miri/tests/fail/unwind-action-terminate.rs b/src/tools/miri/tests/fail/unwind-action-terminate.rs
index 86406872c59..465e07c8db4 100644
--- a/src/tools/miri/tests/fail/unwind-action-terminate.rs
+++ b/src/tools/miri/tests/fail/unwind-action-terminate.rs
@@ -3,8 +3,6 @@
 //@normalize-stderr-test: "\| +\^+" -> "| ^"
 //@normalize-stderr-test: "\n +[0-9]+:[^\n]+" -> ""
 //@normalize-stderr-test: "\n +at [^\n]+" -> ""
-#![feature(c_unwind)]
-
 extern "C" fn panic_abort() {
     panic!()
 }
diff --git a/src/tools/miri/tests/panic/function_calls/exported_symbol_good_unwind.rs b/src/tools/miri/tests/panic/function_calls/exported_symbol_good_unwind.rs
index 71b799a1f12..0e8d45af27f 100644
--- a/src/tools/miri/tests/panic/function_calls/exported_symbol_good_unwind.rs
+++ b/src/tools/miri/tests/panic/function_calls/exported_symbol_good_unwind.rs
@@ -2,7 +2,7 @@
 // found in this form" errors works without `-C prefer-dynamic` (`panic!` calls foreign function
 // `__rust_start_panic`).
 // no-prefer-dynamic
-#![feature(c_unwind, unboxed_closures)]
+#![feature(unboxed_closures)]
 
 use std::panic;
 
diff --git a/tests/assembly/asm/aarch64-modifiers.rs b/tests/assembly/asm/aarch64-modifiers.rs
index ffba06ae47b..b7ef1d77ea0 100644
--- a/tests/assembly/asm/aarch64-modifiers.rs
+++ b/tests/assembly/asm/aarch64-modifiers.rs
@@ -1,5 +1,5 @@
 //@ assembly-output: emit-asm
-//@ compile-flags: -O
+//@ compile-flags: -O -C panic=abort
 //@ compile-flags: --target aarch64-unknown-linux-gnu
 //@ needs-llvm-components: aarch64
 
diff --git a/tests/assembly/asm/arm-modifiers.rs b/tests/assembly/asm/arm-modifiers.rs
index fa2e75eb35b..0674e169d72 100644
--- a/tests/assembly/asm/arm-modifiers.rs
+++ b/tests/assembly/asm/arm-modifiers.rs
@@ -1,5 +1,5 @@
 //@ assembly-output: emit-asm
-//@ compile-flags: -O
+//@ compile-flags: -O -C panic=abort
 //@ compile-flags: --target armv7-unknown-linux-gnueabihf
 //@ compile-flags: -C target-feature=+neon
 //@ needs-llvm-components: arm
diff --git a/tests/assembly/asm/x86-modifiers.rs b/tests/assembly/asm/x86-modifiers.rs
index 1a92585298d..c5e393b1056 100644
--- a/tests/assembly/asm/x86-modifiers.rs
+++ b/tests/assembly/asm/x86-modifiers.rs
@@ -1,6 +1,6 @@
 //@ revisions: x86_64 i686
 //@ assembly-output: emit-asm
-//@ compile-flags: -O
+//@ compile-flags: -O -C panic=abort
 //@[x86_64] compile-flags: --target x86_64-unknown-linux-gnu
 //@[x86_64] needs-llvm-components: x86
 //@[i686] compile-flags: --target i686-unknown-linux-gnu
diff --git a/tests/assembly/simd-bitmask.rs b/tests/assembly/simd-bitmask.rs
index 8264a706852..cd22ca06706 100644
--- a/tests/assembly/simd-bitmask.rs
+++ b/tests/assembly/simd-bitmask.rs
@@ -11,7 +11,7 @@
 //@ [aarch64] needs-llvm-components: aarch64
 //@ [aarch64] min-llvm-version: 18.0
 //@ assembly-output: emit-asm
-//@ compile-flags: --crate-type=lib -O
+//@ compile-flags: --crate-type=lib -O -C panic=abort
 
 #![feature(no_core, lang_items, repr_simd, intrinsics)]
 #![no_core]
diff --git a/tests/assembly/simd-intrinsic-gather.rs b/tests/assembly/simd-intrinsic-gather.rs
index ef6b597c25f..83015f05ab3 100644
--- a/tests/assembly/simd-intrinsic-gather.rs
+++ b/tests/assembly/simd-intrinsic-gather.rs
@@ -4,7 +4,7 @@
 //@ [x86-avx512] needs-llvm-components: x86
 //@ [x86-avx512] min-llvm-version: 18.0
 //@ assembly-output: emit-asm
-//@ compile-flags: --crate-type=lib -O
+//@ compile-flags: --crate-type=lib -O -C panic=abort
 
 #![feature(no_core, lang_items, repr_simd, intrinsics)]
 #![no_core]
diff --git a/tests/assembly/simd-intrinsic-mask-load.rs b/tests/assembly/simd-intrinsic-mask-load.rs
index 49d231c45f8..d537c143d36 100644
--- a/tests/assembly/simd-intrinsic-mask-load.rs
+++ b/tests/assembly/simd-intrinsic-mask-load.rs
@@ -6,7 +6,7 @@
 //@ [x86-avx512] compile-flags: -C target-feature=+avx512f,+avx512vl,+avx512bw,+avx512dq
 //@ [x86-avx512] needs-llvm-components: x86
 //@ assembly-output: emit-asm
-//@ compile-flags: --crate-type=lib -O
+//@ compile-flags: --crate-type=lib -O -C panic=abort
 
 #![feature(no_core, lang_items, repr_simd, intrinsics)]
 #![no_core]
diff --git a/tests/assembly/simd-intrinsic-mask-reduce.rs b/tests/assembly/simd-intrinsic-mask-reduce.rs
index 72c3f6376e8..dd4dbaeda76 100644
--- a/tests/assembly/simd-intrinsic-mask-reduce.rs
+++ b/tests/assembly/simd-intrinsic-mask-reduce.rs
@@ -8,7 +8,7 @@
 //@ [aarch64] needs-llvm-components: aarch64
 //@ [aarch64] min-llvm-version: 18.0
 //@ assembly-output: emit-asm
-//@ compile-flags: --crate-type=lib -O
+//@ compile-flags: --crate-type=lib -O -C panic=abort
 
 #![feature(no_core, lang_items, repr_simd, intrinsics)]
 #![no_core]
diff --git a/tests/assembly/simd-intrinsic-mask-store.rs b/tests/assembly/simd-intrinsic-mask-store.rs
index a6611e1c23d..5d4c00c3823 100644
--- a/tests/assembly/simd-intrinsic-mask-store.rs
+++ b/tests/assembly/simd-intrinsic-mask-store.rs
@@ -6,7 +6,7 @@
 //@ [x86-avx512] compile-flags: -C target-feature=+avx512f,+avx512vl,+avx512bw,+avx512dq
 //@ [x86-avx512] needs-llvm-components: x86
 //@ assembly-output: emit-asm
-//@ compile-flags: --crate-type=lib -O
+//@ compile-flags: --crate-type=lib -O -C panic=abort
 
 #![feature(no_core, lang_items, repr_simd, intrinsics)]
 #![no_core]
diff --git a/tests/assembly/simd-intrinsic-scatter.rs b/tests/assembly/simd-intrinsic-scatter.rs
index 6ffefb0801a..55095e4cb68 100644
--- a/tests/assembly/simd-intrinsic-scatter.rs
+++ b/tests/assembly/simd-intrinsic-scatter.rs
@@ -4,7 +4,7 @@
 //@ [x86-avx512] needs-llvm-components: x86
 //@ [x86-avx512] min-llvm-version: 18.0
 //@ assembly-output: emit-asm
-//@ compile-flags: --crate-type=lib -O
+//@ compile-flags: --crate-type=lib -O -C panic=abort
 
 #![feature(no_core, lang_items, repr_simd, intrinsics)]
 #![no_core]
diff --git a/tests/assembly/simd-intrinsic-select.rs b/tests/assembly/simd-intrinsic-select.rs
index 3f36402e3d0..4dfc2f9ed1f 100644
--- a/tests/assembly/simd-intrinsic-select.rs
+++ b/tests/assembly/simd-intrinsic-select.rs
@@ -9,7 +9,7 @@
 //@ [aarch64] needs-llvm-components: aarch64
 //@ [aarch64] min-llvm-version: 18.0
 //@ assembly-output: emit-asm
-//@ compile-flags: --crate-type=lib -O
+//@ compile-flags: --crate-type=lib -O -C panic=abort
 
 #![feature(no_core, lang_items, repr_simd, intrinsics)]
 #![no_core]
diff --git a/tests/codegen/align-byval-alignment-mismatch.rs b/tests/codegen/align-byval-alignment-mismatch.rs
index 71f2dd42ec2..835cc7393e5 100644
--- a/tests/codegen/align-byval-alignment-mismatch.rs
+++ b/tests/codegen/align-byval-alignment-mismatch.rs
@@ -1,9 +1,9 @@
 // ignore-tidy-linelength
 //@ revisions:i686-linux x86_64-linux
 
-//@[i686-linux] compile-flags: --target i686-unknown-linux-gnu
+//@[i686-linux] compile-flags: --target i686-unknown-linux-gnu -C panic=abort
 //@[i686-linux] needs-llvm-components: x86
-//@[x86_64-linux] compile-flags: --target x86_64-unknown-linux-gnu
+//@[x86_64-linux] compile-flags: --target x86_64-unknown-linux-gnu -C panic=abort
 //@[x86_64-linux] needs-llvm-components: x86
 
 // Tests that we correctly copy arguments into allocas when the alignment of the byval argument
diff --git a/tests/codegen/avr/avr-func-addrspace.rs b/tests/codegen/avr/avr-func-addrspace.rs
index 2d9efb52c7c..70834707564 100644
--- a/tests/codegen/avr/avr-func-addrspace.rs
+++ b/tests/codegen/avr/avr-func-addrspace.rs
@@ -1,4 +1,4 @@
-//@ compile-flags: -O --target=avr-unknown-gnu-atmega328 --crate-type=rlib
+//@ compile-flags: -O --target=avr-unknown-gnu-atmega328 --crate-type=rlib -C panic=abort
 //@ needs-llvm-components: avr
 
 // This test validates that function pointers can be stored in global variables
diff --git a/tests/codegen/catch-unwind.rs b/tests/codegen/catch-unwind.rs
index 4e1f9a88e95..48ad486fa03 100644
--- a/tests/codegen/catch-unwind.rs
+++ b/tests/codegen/catch-unwind.rs
@@ -14,7 +14,6 @@
 //@ ignore-loongarch64 FIXME
 
 #![crate_type = "lib"]
-#![feature(c_unwind)]
 
 extern "C" {
     fn bar();
diff --git a/tests/codegen/cffi/c-variadic.rs b/tests/codegen/cffi/c-variadic.rs
index 914d1623ed2..140d2f37f46 100644
--- a/tests/codegen/cffi/c-variadic.rs
+++ b/tests/codegen/cffi/c-variadic.rs
@@ -4,7 +4,6 @@
 
 #![crate_type = "lib"]
 #![feature(c_variadic)]
-#![feature(c_unwind)]
 #![no_std]
 use core::ffi::VaList;
 
diff --git a/tests/codegen/debuginfo-inline-callsite-location.rs b/tests/codegen/debuginfo-inline-callsite-location.rs
index f690c9c0937..aee07b4eb8c 100644
--- a/tests/codegen/debuginfo-inline-callsite-location.rs
+++ b/tests/codegen/debuginfo-inline-callsite-location.rs
@@ -1,4 +1,4 @@
-//@ compile-flags: -g -O
+//@ compile-flags: -g -O -C panic=abort
 
 // Check that each inline call site for the same function uses the same "sub-program" so that LLVM
 // can correctly merge the debug info if it merges the inlined code (e.g., for merging of tail
diff --git a/tests/codegen/unwind-abis/aapcs-unwind-abi.rs b/tests/codegen/unwind-abis/aapcs-unwind-abi.rs
index 48c7ecf7824..0d9c7757883 100644
--- a/tests/codegen/unwind-abis/aapcs-unwind-abi.rs
+++ b/tests/codegen/unwind-abis/aapcs-unwind-abi.rs
@@ -1,7 +1,7 @@
 //@ needs-llvm-components: arm
 //@ compile-flags: --target=armv7-unknown-linux-gnueabihf --crate-type=rlib -Cno-prepopulate-passes
 #![no_core]
-#![feature(no_core, lang_items, c_unwind)]
+#![feature(no_core, lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/tests/codegen/unwind-abis/c-unwind-abi-panic-abort.rs b/tests/codegen/unwind-abis/c-unwind-abi-panic-abort.rs
index 8bb2122946f..8d2745ba2f7 100644
--- a/tests/codegen/unwind-abis/c-unwind-abi-panic-abort.rs
+++ b/tests/codegen/unwind-abis/c-unwind-abi-panic-abort.rs
@@ -4,7 +4,6 @@
 // when the code is compiled with `panic=abort`.
 
 #![crate_type = "lib"]
-#![feature(c_unwind)]
 
 // CHECK: @rust_item_that_can_unwind() unnamed_addr [[ATTR0:#[0-9]+]]
 #[no_mangle]
diff --git a/tests/codegen/unwind-abis/c-unwind-abi.rs b/tests/codegen/unwind-abis/c-unwind-abi.rs
index 99763943a6a..46c08b5fc4f 100644
--- a/tests/codegen/unwind-abis/c-unwind-abi.rs
+++ b/tests/codegen/unwind-abis/c-unwind-abi.rs
@@ -6,7 +6,6 @@
 // to prevent LLVM from inferring the attribute.
 
 #![crate_type = "lib"]
-#![feature(c_unwind)]
 
 // CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
 #[no_mangle]
diff --git a/tests/codegen/unwind-abis/cdecl-unwind-abi.rs b/tests/codegen/unwind-abis/cdecl-unwind-abi.rs
index 78dbb55b35a..8e643d6ce49 100644
--- a/tests/codegen/unwind-abis/cdecl-unwind-abi.rs
+++ b/tests/codegen/unwind-abis/cdecl-unwind-abi.rs
@@ -6,7 +6,6 @@
 // disable optimizations above to prevent LLVM from inferring the attribute.
 
 #![crate_type = "lib"]
-#![feature(c_unwind)]
 
 // CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
 #[no_mangle]
diff --git a/tests/codegen/unwind-abis/fastcall-unwind-abi.rs b/tests/codegen/unwind-abis/fastcall-unwind-abi.rs
index 3cbeaf51d96..4c7b2856e2e 100644
--- a/tests/codegen/unwind-abis/fastcall-unwind-abi.rs
+++ b/tests/codegen/unwind-abis/fastcall-unwind-abi.rs
@@ -1,7 +1,7 @@
 //@ needs-llvm-components: x86
 //@ compile-flags: --target=i686-pc-windows-msvc --crate-type=rlib -Cno-prepopulate-passes
 #![no_core]
-#![feature(no_core, lang_items, c_unwind)]
+#![feature(no_core, lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/tests/codegen/unwind-abis/nounwind-on-stable-panic-unwind.rs b/tests/codegen/unwind-abis/nounwind-on-stable-panic-unwind.rs
deleted file mode 100644
index a7f7f2fb77f..00000000000
--- a/tests/codegen/unwind-abis/nounwind-on-stable-panic-unwind.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-//@ compile-flags: -C opt-level=0
-//@ needs-unwind
-
-#![crate_type = "lib"]
-
-// We disable optimizations to prevent LLVM from inferring the attribute.
-
-extern "C" {
-    fn bar();
-}
-
-// CHECK-NOT: Function Attrs:{{.*}}nounwind
-pub unsafe extern "C" fn foo() {
-    bar();
-}
-
-// Note that this test will get removed when `C-unwind` is fully stabilized
diff --git a/tests/codegen/unwind-abis/nounwind.rs b/tests/codegen/unwind-abis/nounwind.rs
index 80bf8d67091..e40ed48ca73 100644
--- a/tests/codegen/unwind-abis/nounwind.rs
+++ b/tests/codegen/unwind-abis/nounwind.rs
@@ -2,7 +2,6 @@
 //@ needs-unwind
 
 #![crate_type = "lib"]
-#![feature(c_unwind)]
 
 // We disable optimizations to prevent LLVM from inferring the attribute.
 
diff --git a/tests/codegen/unwind-abis/stdcall-unwind-abi.rs b/tests/codegen/unwind-abis/stdcall-unwind-abi.rs
index ffb235cd116..ffc11d1faef 100644
--- a/tests/codegen/unwind-abis/stdcall-unwind-abi.rs
+++ b/tests/codegen/unwind-abis/stdcall-unwind-abi.rs
@@ -1,7 +1,7 @@
 //@ needs-llvm-components: x86
 //@ compile-flags: --target=i686-pc-windows-msvc --crate-type=rlib -Cno-prepopulate-passes
 #![no_core]
-#![feature(no_core, lang_items, c_unwind)]
+#![feature(no_core, lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/tests/codegen/unwind-abis/system-unwind-abi.rs b/tests/codegen/unwind-abis/system-unwind-abi.rs
index 1dd0e9bbbec..5f910248346 100644
--- a/tests/codegen/unwind-abis/system-unwind-abi.rs
+++ b/tests/codegen/unwind-abis/system-unwind-abi.rs
@@ -6,7 +6,6 @@
 // optimizations above to prevent LLVM from inferring the attribute.
 
 #![crate_type = "lib"]
-#![feature(c_unwind)]
 
 // CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
 #[no_mangle]
diff --git a/tests/codegen/unwind-abis/sysv64-unwind-abi.rs b/tests/codegen/unwind-abis/sysv64-unwind-abi.rs
index 9824009dc55..c869ca7e2b8 100644
--- a/tests/codegen/unwind-abis/sysv64-unwind-abi.rs
+++ b/tests/codegen/unwind-abis/sysv64-unwind-abi.rs
@@ -1,7 +1,7 @@
 //@ needs-llvm-components: x86
 //@ compile-flags: --target=x86_64-unknown-linux-gnu --crate-type=rlib -Cno-prepopulate-passes
 #![no_core]
-#![feature(no_core, lang_items, c_unwind)]
+#![feature(no_core, lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/tests/codegen/unwind-abis/thiscall-unwind-abi.rs b/tests/codegen/unwind-abis/thiscall-unwind-abi.rs
index a96f4d5a350..19b23ee47ba 100644
--- a/tests/codegen/unwind-abis/thiscall-unwind-abi.rs
+++ b/tests/codegen/unwind-abis/thiscall-unwind-abi.rs
@@ -1,7 +1,7 @@
 //@ needs-llvm-components: x86
 //@ compile-flags: --target=i686-pc-windows-msvc --crate-type=rlib -Cno-prepopulate-passes
 #![no_core]
-#![feature(no_core, lang_items, c_unwind)]
+#![feature(no_core, lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/tests/codegen/unwind-abis/vectorcall-unwind-abi.rs b/tests/codegen/unwind-abis/vectorcall-unwind-abi.rs
index 9929e3e3703..b420f67ca9b 100644
--- a/tests/codegen/unwind-abis/vectorcall-unwind-abi.rs
+++ b/tests/codegen/unwind-abis/vectorcall-unwind-abi.rs
@@ -1,7 +1,7 @@
 //@ needs-llvm-components: x86
 //@ compile-flags: --target=i686-pc-windows-msvc --crate-type=rlib -Cno-prepopulate-passes
 #![no_core]
-#![feature(no_core, lang_items, c_unwind, abi_vectorcall)]
+#![feature(no_core, lang_items, abi_vectorcall)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/tests/codegen/unwind-abis/win64-unwind-abi.rs b/tests/codegen/unwind-abis/win64-unwind-abi.rs
index a45a94f628d..2697d3cbcd6 100644
--- a/tests/codegen/unwind-abis/win64-unwind-abi.rs
+++ b/tests/codegen/unwind-abis/win64-unwind-abi.rs
@@ -1,7 +1,7 @@
 //@ needs-llvm-components: x86
 //@ compile-flags: --target=x86_64-unknown-linux-gnu --crate-type=rlib -Cno-prepopulate-passes
 #![no_core]
-#![feature(no_core, lang_items, c_unwind)]
+#![feature(no_core, lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/tests/codegen/unwind-and-panic-abort.rs b/tests/codegen/unwind-and-panic-abort.rs
index 430502308cf..8efa140058a 100644
--- a/tests/codegen/unwind-and-panic-abort.rs
+++ b/tests/codegen/unwind-and-panic-abort.rs
@@ -1,7 +1,6 @@
 //@ compile-flags: -C panic=abort
 
 #![crate_type = "lib"]
-#![feature(c_unwind)]
 
 extern "C-unwind" {
     fn bar();
diff --git a/tests/codegen/unwind-extern-exports.rs b/tests/codegen/unwind-extern-exports.rs
index ea59748b3bc..e692fd1a547 100644
--- a/tests/codegen/unwind-extern-exports.rs
+++ b/tests/codegen/unwind-extern-exports.rs
@@ -2,7 +2,6 @@
 //@ needs-unwind
 
 #![crate_type = "lib"]
-#![feature(c_unwind)]
 
 // Make sure these all do *not* get the attribute.
 // We disable optimizations to prevent LLVM from inferring the attribute.
diff --git a/tests/codegen/unwind-extern-imports.rs b/tests/codegen/unwind-extern-imports.rs
index 790e4def8b3..dfae8aae64a 100644
--- a/tests/codegen/unwind-extern-imports.rs
+++ b/tests/codegen/unwind-extern-imports.rs
@@ -2,7 +2,6 @@
 //@ needs-unwind
 
 #![crate_type = "lib"]
-#![feature(c_unwind)]
 
 extern "C" {
     // CHECK: Function Attrs:{{.*}}nounwind
diff --git a/tests/coverage/abort.cov-map b/tests/coverage/abort.cov-map
index 5673fa98ca6..15156ec9811 100644
--- a/tests/coverage/abort.cov-map
+++ b/tests/coverage/abort.cov-map
@@ -1,5 +1,5 @@
 Function name: abort::main
-Raw bytes (89): 0x[01, 01, 0a, 01, 27, 05, 09, 03, 0d, 22, 11, 03, 0d, 03, 0d, 22, 15, 03, 0d, 03, 0d, 05, 09, 0d, 01, 0e, 01, 01, 1b, 03, 02, 0b, 00, 18, 22, 01, 0c, 00, 19, 11, 00, 1a, 02, 0a, 0e, 02, 0a, 00, 0b, 22, 02, 0c, 00, 19, 15, 00, 1a, 00, 31, 1a, 00, 31, 00, 32, 22, 04, 0c, 00, 19, 05, 00, 1a, 00, 31, 09, 00, 31, 00, 32, 27, 01, 09, 00, 17, 0d, 02, 05, 01, 02]
+Raw bytes (89): 0x[01, 01, 0a, 01, 27, 05, 09, 03, 0d, 22, 11, 03, 0d, 03, 0d, 22, 15, 03, 0d, 03, 0d, 05, 09, 0d, 01, 0d, 01, 01, 1b, 03, 02, 0b, 00, 18, 22, 01, 0c, 00, 19, 11, 00, 1a, 02, 0a, 0e, 02, 0a, 00, 0b, 22, 02, 0c, 00, 19, 15, 00, 1a, 00, 31, 1a, 00, 31, 00, 32, 22, 04, 0c, 00, 19, 05, 00, 1a, 00, 31, 09, 00, 31, 00, 32, 27, 01, 09, 00, 17, 0d, 02, 05, 01, 02]
 Number of files: 1
 - file 0 => global file 1
 Number of expressions: 10
@@ -14,7 +14,7 @@ Number of expressions: 10
 - expression 8 operands: lhs = Expression(0, Add), rhs = Counter(3)
 - expression 9 operands: lhs = Counter(1), rhs = Counter(2)
 Number of file 0 mappings: 13
-- Code(Counter(0)) at (prev + 14, 1) to (start + 1, 27)
+- Code(Counter(0)) at (prev + 13, 1) to (start + 1, 27)
 - Code(Expression(0, Add)) at (prev + 2, 11) to (start + 0, 24)
     = (c0 + (c1 + c2))
 - Code(Expression(8, Sub)) at (prev + 1, 12) to (start + 0, 25)
@@ -36,13 +36,13 @@ Number of file 0 mappings: 13
 - Code(Counter(3)) at (prev + 2, 5) to (start + 1, 2)
 
 Function name: abort::might_abort
-Raw bytes (21): 0x[01, 01, 01, 01, 05, 03, 01, 04, 01, 01, 14, 05, 02, 09, 01, 24, 02, 02, 0c, 03, 02]
+Raw bytes (21): 0x[01, 01, 01, 01, 05, 03, 01, 03, 01, 01, 14, 05, 02, 09, 01, 24, 02, 02, 0c, 03, 02]
 Number of files: 1
 - file 0 => global file 1
 Number of expressions: 1
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
 Number of file 0 mappings: 3
-- Code(Counter(0)) at (prev + 4, 1) to (start + 1, 20)
+- Code(Counter(0)) at (prev + 3, 1) to (start + 1, 20)
 - Code(Counter(1)) at (prev + 2, 9) to (start + 1, 36)
 - Code(Expression(0, Sub)) at (prev + 2, 12) to (start + 3, 2)
     = (c0 - c1)
diff --git a/tests/coverage/abort.coverage b/tests/coverage/abort.coverage
index b658a656259..29e3ad5eda7 100644
--- a/tests/coverage/abort.coverage
+++ b/tests/coverage/abort.coverage
@@ -1,4 +1,3 @@
-   LL|       |#![feature(c_unwind)]
    LL|       |#![allow(unused_assignments)]
    LL|       |
    LL|     12|extern "C" fn might_abort(should_abort: bool) {
diff --git a/tests/coverage/abort.rs b/tests/coverage/abort.rs
index 649e8e52a49..6c06a3f9d87 100644
--- a/tests/coverage/abort.rs
+++ b/tests/coverage/abort.rs
@@ -1,4 +1,3 @@
-#![feature(c_unwind)]
 #![allow(unused_assignments)]
 
 extern "C" fn might_abort(should_abort: bool) {
diff --git a/tests/run-make/forced-unwind-terminate-pof/foo.rs b/tests/run-make/forced-unwind-terminate-pof/foo.rs
index 0a51287313f..3a847846217 100644
--- a/tests/run-make/forced-unwind-terminate-pof/foo.rs
+++ b/tests/run-make/forced-unwind-terminate-pof/foo.rs
@@ -1,6 +1,5 @@
 // Tests that forced unwind through POF Rust frames wouldn't trigger our terminating guards.
 
-#![feature(c_unwind)]
 #![no_main]
 
 extern "C-unwind" {
diff --git a/tests/ui/asm/x86_64/may_unwind.rs b/tests/ui/asm/x86_64/may_unwind.rs
index 3b2c1edcd47..d3a2916df9d 100644
--- a/tests/ui/asm/x86_64/may_unwind.rs
+++ b/tests/ui/asm/x86_64/may_unwind.rs
@@ -16,7 +16,7 @@ impl Drop for Foo<'_> {
     }
 }
 
-extern "C" fn panicky() {
+extern "C-unwind" fn panicky() {
     resume_unwind(Box::new(()));
 }
 
diff --git a/tests/ui/consts/const-eval/unwind-abort.rs b/tests/ui/consts/const-eval/unwind-abort.rs
index 57959e7db6a..26113e23888 100644
--- a/tests/ui/consts/const-eval/unwind-abort.rs
+++ b/tests/ui/consts/const-eval/unwind-abort.rs
@@ -1,4 +1,4 @@
-#![feature(c_unwind, const_extern_fn)]
+#![feature(const_extern_fn)]
 
 const extern "C" fn foo() {
     panic!() //~ ERROR evaluation of constant value failed
diff --git a/tests/ui/consts/unwind-abort.rs b/tests/ui/consts/unwind-abort.rs
index 35db9152bd5..1dd33f327fb 100644
--- a/tests/ui/consts/unwind-abort.rs
+++ b/tests/ui/consts/unwind-abort.rs
@@ -1,6 +1,6 @@
 //@ check-pass
 
-#![feature(c_unwind, const_extern_fn)]
+#![feature(const_extern_fn)]
 
 // We don't unwind in const-eval anyways.
 const extern "C" fn foo() {
diff --git a/tests/ui/panics/abort-on-panic.rs b/tests/ui/panics/abort-on-panic.rs
index 5736ecf8685..feccefb2537 100644
--- a/tests/ui/panics/abort-on-panic.rs
+++ b/tests/ui/panics/abort-on-panic.rs
@@ -4,7 +4,6 @@
 //@[next] compile-flags: -Znext-solver
 
 #![allow(unused_must_use)]
-#![feature(c_unwind)]
 #![feature(panic_always_abort)]
 // Since we mark some ABIs as "nounwind" to LLVM, we must make sure that
 // we never unwind through them.
diff --git a/tests/ui/panics/panic-in-ffi.rs b/tests/ui/panics/panic-in-ffi.rs
index 6f54acb3e04..88f45f9a871 100644
--- a/tests/ui/panics/panic-in-ffi.rs
+++ b/tests/ui/panics/panic-in-ffi.rs
@@ -7,7 +7,6 @@
 //@ normalize-stderr-test: "(core/src/panicking\.rs):[0-9]+:[0-9]+" -> "$1:$$LINE:$$COL"
 //@ needs-unwind
 //@ ignore-emscripten "RuntimeError" junk in output
-#![feature(c_unwind)]
 
 extern "C" fn panic_in_ffi() {
     panic!("Test");
diff --git a/tests/ui/panics/panic-in-ffi.run.stderr b/tests/ui/panics/panic-in-ffi.run.stderr
index a92a66c57fd..596355399c8 100644
--- a/tests/ui/panics/panic-in-ffi.run.stderr
+++ b/tests/ui/panics/panic-in-ffi.run.stderr
@@ -1,4 +1,4 @@
-thread 'main' panicked at $DIR/panic-in-ffi.rs:13:5:
+thread 'main' panicked at $DIR/panic-in-ffi.rs:12:5:
 Test
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 thread 'main' panicked at library/core/src/panicking.rs:$LINE:$COL:
diff --git a/tests/ui/unwind-abis/feature-gate-c_unwind.rs b/tests/ui/unwind-abis/feature-gate-c_unwind.rs
deleted file mode 100644
index 28ef7d57788..00000000000
--- a/tests/ui/unwind-abis/feature-gate-c_unwind.rs
+++ /dev/null
@@ -1,4 +0,0 @@
-//@ ignore-test
-
-// After partial stabilisation, `c_unwind` only contains codegen behaviour changes
-// and are tested in `src/test/codegen/unwind-abis`