9 files changed, 9 insertions, 9 deletions
diff --git a/src/test/codegen/call-llvm-intrinsics.rs b/src/test/codegen/call-llvm-intrinsics.rs
index 24e3d3cd64b..998099c2390 100644
--- a/src/test/codegen/call-llvm-intrinsics.rs
+++ b/src/test/codegen/call-llvm-intrinsics.rs
@@ -13,7 +13,7 @@ impl Drop for A {
     }
 }
 
-extern {
+extern "C" {
     #[link_name = "llvm.sqrt.f32"]
     fn sqrt(x: f32) -> f32;
 }
diff --git a/src/test/codegen/dealloc-no-unwind.rs b/src/test/codegen/dealloc-no-unwind.rs
index ff21b4caa83..f047c7a180c 100644
--- a/src/test/codegen/dealloc-no-unwind.rs
+++ b/src/test/codegen/dealloc-no-unwind.rs
@@ -8,7 +8,7 @@ struct A;
 
 impl Drop for A {
     fn drop(&mut self) {
-        extern { fn foo(); }
+        extern "C" { fn foo(); }
         unsafe { foo(); }
     }
 }
diff --git a/src/test/codegen/debug-column.rs b/src/test/codegen/debug-column.rs
index f348c48566d..5d3afef5289 100644
--- a/src/test/codegen/debug-column.rs
+++ b/src/test/codegen/debug-column.rs
@@ -18,7 +18,7 @@ fn main() {
     }
 }
 
-extern {
+extern "C" {
     fn giraffe();
     fn turtle();
 }
diff --git a/src/test/codegen/ffi-const.rs b/src/test/codegen/ffi-const.rs
index 440d022a12c..67baf6fdd3e 100644
--- a/src/test/codegen/ffi-const.rs
+++ b/src/test/codegen/ffi-const.rs
@@ -4,7 +4,7 @@
 
 pub fn bar() { unsafe { foo() } }
 
-extern {
+extern "C" {
     // CHECK-LABEL: declare void @foo()
     // CHECK-SAME: [[ATTRS:#[0-9]+]]
     // CHECK-DAG: attributes [[ATTRS]] = { {{.*}}readnone{{.*}} }
diff --git a/src/test/codegen/ffi-out-of-bounds-loads.rs b/src/test/codegen/ffi-out-of-bounds-loads.rs
index 139a06ab53d..dc16306eb96 100644
--- a/src/test/codegen/ffi-out-of-bounds-loads.rs
+++ b/src/test/codegen/ffi-out-of-bounds-loads.rs
@@ -11,7 +11,7 @@ struct S {
     f3: i32,
 }
 
-extern {
+extern "C" {
     fn foo(s: S);
 }
 
diff --git a/src/test/codegen/ffi-pure.rs b/src/test/codegen/ffi-pure.rs
index f0ebc1caa09..3afb0856c9d 100644
--- a/src/test/codegen/ffi-pure.rs
+++ b/src/test/codegen/ffi-pure.rs
@@ -4,7 +4,7 @@
 
 pub fn bar() { unsafe { foo() } }
 
-extern {
+extern "C" {
     // CHECK-LABEL: declare void @foo()
     // CHECK-SAME: [[ATTRS:#[0-9]+]]
     // CHECK-DAG: attributes [[ATTRS]] = { {{.*}}readonly{{.*}} }
diff --git a/src/test/codegen/ffi-returns-twice.rs b/src/test/codegen/ffi-returns-twice.rs
index 4db328f1cdf..75301dfd346 100644
--- a/src/test/codegen/ffi-returns-twice.rs
+++ b/src/test/codegen/ffi-returns-twice.rs
@@ -4,7 +4,7 @@
 
 pub fn bar() { unsafe { foo() } }
 
-extern {
+extern "C" {
     // CHECK-LABEL: declare void @foo()
     // CHECK-SAME: [[ATTRS:#[0-9]+]]
     // CHECK-DAG: attributes [[ATTRS]] = { {{.*}}returns_twice{{.*}} }
diff --git a/src/test/codegen/riscv-abi/call-llvm-intrinsics.rs b/src/test/codegen/riscv-abi/call-llvm-intrinsics.rs
index f100a23a318..31a88f2c0a9 100644
--- a/src/test/codegen/riscv-abi/call-llvm-intrinsics.rs
+++ b/src/test/codegen/riscv-abi/call-llvm-intrinsics.rs
@@ -13,7 +13,7 @@ impl Drop for A {
     }
 }
 
-extern {
+extern "C" {
     #[link_name = "llvm.sqrt.f32"]
     fn sqrt(x: f32) -> f32;
 }
diff --git a/src/test/codegen/unwind-extern-imports.rs b/src/test/codegen/unwind-extern-imports.rs
index 8403e1e9da9..a2ba24aca25 100644
--- a/src/test/codegen/unwind-extern-imports.rs
+++ b/src/test/codegen/unwind-extern-imports.rs
@@ -4,7 +4,7 @@
 #![crate_type = "lib"]
 #![feature(unwind_attributes)]
 
-extern {
+extern "C" {
 // CHECK: Function Attrs:{{.*}}nounwind
 // CHECK-NEXT: declare void @extern_fn
     fn extern_fn();