Fix tests

tests/lang_tests_common.rs

@@ -46,7 +46,6 @@ pub fn main_inner(profile: Profile) {
                 &format!("-Zcodegen-backend={}/target/debug/librustc_codegen_gcc.so", current_dir),
                 "--sysroot", &format!("{}/build_sysroot/sysroot/", current_dir),
                 "-Zno-parallel-llvm",
-                "-C", "panic=abort",
                 "-C", "link-arg=-lc",
                 "-o", exe.to_str().expect("to_str"),
                 path.to_str().expect("to_str"),

tests/run/int.rs

@@ -3,22 +3,14 @@
 // Run-time:
 //   status: 0
 
-#![feature(bench_black_box, const_black_box, core_intrinsics, start)]
-
-#![no_std]
-
-#[panic_handler]
-fn panic_handler(_: &core::panic::PanicInfo) -> ! {
-    core::intrinsics::abort();
-}
+#![feature(bench_black_box, const_black_box)]
 
 /*
  * Code
  */
 
-#[start]
-fn main(_argc: isize, _argv: *const *const u8) -> isize {
-    use core::hint::black_box;
+fn main() {
+    use std::hint::black_box;
 
     macro_rules! check {
         ($ty:ty, $expr:expr) => {
@@ -335,6 +327,4 @@ macro_rules! check_ops32 {
         const VAL5: T = 73236519889708027473620326106273939584_i128;
         check_ops128!();
     }
-
-    0
 }