Merge commit '98ed962c7d' into master

compiler/rustc_codegen_gcc/tests/run/operations.rs

@@ -207,6 +207,24 @@ impl Mul for isize {
     }
 }
 
+#[track_caller]
+#[lang = "panic_const_add_overflow"]
+pub fn panic_const_add_overflow() -> ! {
+    panic("attempt to add with overflow");
+}
+
+#[track_caller]
+#[lang = "panic_const_sub_overflow"]
+pub fn panic_const_sub_overflow() -> ! {
+    panic("attempt to subtract with overflow");
+}
+
+#[track_caller]
+#[lang = "panic_const_mul_overflow"]
+pub fn panic_const_mul_overflow() -> ! {
+    panic("attempt to multiply with overflow");
+}
+
 /*
  * Code
  */