remove support for the #[start] attribute

2 files changed, 24 insertions, 18 deletions

diff --git a/tests/codegen/gdb_debug_script_load.rs b/tests/codegen/gdb_debug_script_load.rs
index 30d518c0bcb..3e92eba10b1 100644
--- a/tests/codegen/gdb_debug_script_load.rs
+++ b/tests/codegen/gdb_debug_script_load.rs
@@ -4,14 +4,34 @@
 //@ ignore-wasm
 //@ ignore-emscripten
 
-//@ compile-flags: -g -C no-prepopulate-passes
+//@ compile-flags: -g -C no-prepopulate-passes -Cpanic=abort
 
-#![feature(start)]
+#![feature(lang_items)]
+#![no_std]
 
+#[panic_handler]
+fn panic_handler(_: &core::panic::PanicInfo) -> ! {
+    loop {}
+}
+
+#[no_mangle]
+extern "C" fn rust_eh_personality() {
+    loop {}
+}
+
+// Needs rustc to generate `main` as that's where the magic load is inserted.
+// IOW, we cannot write this test with `#![no_main]`.
 // CHECK-LABEL: @main
 // CHECK: load volatile i8, {{.+}} @__rustc_debug_gdb_scripts_section__
 
-#[start]
-fn start(_: isize, _: *const *const u8) -> isize {
+#[lang = "start"]
+fn lang_start<T: 'static>(
+    _main: fn() -> T,
+    _argc: isize,
+    _argv: *const *const u8,
+    _sigpipe: u8,
+) -> isize {
     return 0;
 }
+
+fn main() {}
diff --git a/tests/codegen/mainsubprogramstart.rs b/tests/codegen/mainsubprogramstart.rs
deleted file mode 100644
index 0bcb311644d..00000000000
--- a/tests/codegen/mainsubprogramstart.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-//@ ignore-apple
-//@ ignore-wasi wasi codegens the main symbol differently
-
-//@ compile-flags: -g -C no-prepopulate-passes
-
-#![feature(start)]
-
-// CHECK-LABEL: @main
-// CHECK: {{.*}}DISubprogram{{.*}}name: "start",{{.*}}DI{{(SP)?}}FlagMainSubprogram{{.*}}
-
-#[start]
-fn start(_: isize, _: *const *const u8) -> isize {
-    return 0;
-}