diff --git a/tests/ui/extern/extern-types-field-offset.rs b/tests/ui/extern/extern-types-field-offset.rs
index f2682293dcf0c..9c364538025d1 100644
--- a/tests/ui/extern/extern-types-field-offset.rs
+++ b/tests/ui/extern/extern-types-field-offset.rs
@@ -1,6 +1,7 @@
 // run-fail
 // check-run-results
-// normalize-stderr-test "panicking\.rs:\d+:\d+:" -> "panicking.rs:"
+// exec-env:RUST_BACKTRACE=0
+// normalize-stderr-test: "(core/src/panicking\.rs):[0-9]+:[0-9]+" -> "$1:$$LINE:$$COL"
 #![feature(extern_types)]
 
 extern "C" {
diff --git a/tests/ui/extern/extern-types-field-offset.run.stderr b/tests/ui/extern/extern-types-field-offset.run.stderr
index d6ebf3e391dc4..1b04b860db5a6 100644
--- a/tests/ui/extern/extern-types-field-offset.run.stderr
+++ b/tests/ui/extern/extern-types-field-offset.run.stderr
@@ -1,4 +1,4 @@
-thread 'main' panicked at library/core/src/panicking.rs:
+thread 'main' panicked at library/core/src/panicking.rs:$LINE:$COL:
 attempted to compute the size or alignment of extern type `Opaque`
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 thread caused non-unwinding panic. aborting.
diff --git a/tests/ui/extern/extern-types-size_of_val.run.stderr b/tests/ui/extern/extern-types-size_of_val.align.run.stderr
similarity index 73%
rename from tests/ui/extern/extern-types-size_of_val.run.stderr
rename to tests/ui/extern/extern-types-size_of_val.align.run.stderr
index cf39c71a04b19..20c4d8785e846 100644
--- a/tests/ui/extern/extern-types-size_of_val.run.stderr
+++ b/tests/ui/extern/extern-types-size_of_val.align.run.stderr
@@ -1,4 +1,4 @@
-thread 'main' panicked at library/core/src/panicking.rs:
+thread 'main' panicked at library/core/src/panicking.rs:$LINE:$COL:
 attempted to compute the size or alignment of extern type `A`
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 thread caused non-unwinding panic. aborting.
diff --git a/tests/ui/extern/extern-types-size_of_val.rs b/tests/ui/extern/extern-types-size_of_val.rs
index c48db60d40adf..4c4de873b7f0f 100644
--- a/tests/ui/extern/extern-types-size_of_val.rs
+++ b/tests/ui/extern/extern-types-size_of_val.rs
@@ -1,6 +1,8 @@
 // run-fail
 // check-run-results
-// normalize-stderr-test "panicking\.rs:\d+:\d+:" -> "panicking.rs:"
+// exec-env:RUST_BACKTRACE=0
+// normalize-stderr-test: "(core/src/panicking\.rs):[0-9]+:[0-9]+" -> "$1:$$LINE:$$COL"
+// revisions: size align
 #![feature(extern_types)]
 
 use std::mem::{align_of_val, size_of_val};
@@ -13,6 +15,9 @@ fn main() {
     let x: &A = unsafe { &*(1usize as *const A) };
 
     // These don't have a dynamic size, so this should panic.
-    assert_eq!(size_of_val(x), 0);
-    assert_eq!(align_of_val(x), 1);
+    if cfg!(size) {
+        assert_eq!(size_of_val(x), 0);
+    } else {
+        assert_eq!(align_of_val(x), 1);
+    }
 }
diff --git a/tests/ui/extern/extern-types-size_of_val.size.run.stderr b/tests/ui/extern/extern-types-size_of_val.size.run.stderr
new file mode 100644
index 0000000000000..20c4d8785e846
--- /dev/null
+++ b/tests/ui/extern/extern-types-size_of_val.size.run.stderr
@@ -0,0 +1,4 @@
+thread 'main' panicked at library/core/src/panicking.rs:$LINE:$COL:
+attempted to compute the size or alignment of extern type `A`
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
+thread caused non-unwinding panic. aborting.