1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/target_modifiers/defaults_check.rs b/tests/ui/target_modifiers/defaults_check.rs
new file mode 100644
index 00000000000..b8f4848d3a4
--- /dev/null
+++ b/tests/ui/target_modifiers/defaults_check.rs
@@ -0,0 +1,27 @@
+// Tests that default unspecified target modifier value in dependency crate is ok linked
+// with the same value, explicitly specified
+//@ aux-crate:default_reg_struct_return=default_reg_struct_return.rs
+//@ compile-flags: --target i686-unknown-linux-gnu -Cpanic=abort
+//@ revisions:error ok ok_explicit
+//@[ok] compile-flags:
+//@[ok_explicit] compile-flags: -Zreg-struct-return=false
+//@[error] compile-flags: -Zreg-struct-return=true
+
+// Auxiliary build problems with aarch64-apple:
+// Shared library linking cc seems to convert "-m32" flag into -arch armv4t
+// Auxiliary build problems with i686-mingw: linker `cc` not found
+//@ only-x86
+//@ ignore-windows
+//@ ignore-apple
+//@ needs-llvm-components: x86
+//@[ok] build-pass
+//@[ok_explicit] build-pass
+
+#![crate_type = "rlib"]
+//[error]~^ ERROR mixing `-Zreg-struct-return` will cause an ABI mismatch in crate `defaults_check`
+#![no_core]
+#![feature(no_core, lang_items, repr_simd)]
+
+fn foo() {
+    default_reg_struct_return::somefun();
+}