2 files changed, 44 insertions, 0 deletions
diff --git a/src/test/run-make/wasm-panic-small/Makefile b/src/test/run-make/wasm-panic-small/Makefile
new file mode 100644
index 000000000..68397e4bc
--- /dev/null
+++ b/src/test/run-make/wasm-panic-small/Makefile
@@ -0,0 +1,17 @@
+-include ../../run-make-fulldeps/tools.mk
+
+# only-wasm32-bare
+
+all:
+	$(RUSTC) foo.rs -C lto -O --target wasm32-unknown-unknown --cfg a
+	wc -c < $(TMPDIR)/foo.wasm
+	[ "`wc -c < $(TMPDIR)/foo.wasm`" -lt "1024" ]
+	$(RUSTC) foo.rs -C lto -O --target wasm32-unknown-unknown --cfg b
+	wc -c < $(TMPDIR)/foo.wasm
+	[ "`wc -c < $(TMPDIR)/foo.wasm`" -lt "5120" ]
+	$(RUSTC) foo.rs -C lto -O --target wasm32-unknown-unknown --cfg c
+	wc -c < $(TMPDIR)/foo.wasm
+	[ "`wc -c < $(TMPDIR)/foo.wasm`" -lt "5120" ]
+	$(RUSTC) foo.rs -C lto -O --target wasm32-unknown-unknown --cfg d
+	wc -c < $(TMPDIR)/foo.wasm
+	[ "`wc -c < $(TMPDIR)/foo.wasm`" -lt "5120" ]
diff --git a/src/test/run-make/wasm-panic-small/foo.rs b/src/test/run-make/wasm-panic-small/foo.rs
new file mode 100644
index 000000000..6df52affe
--- /dev/null
+++ b/src/test/run-make/wasm-panic-small/foo.rs
@@ -0,0 +1,27 @@
+#![crate_type = "cdylib"]
+
+#[no_mangle]
+#[cfg(a)]
+pub fn foo() {
+    panic!("test");
+}
+
+#[no_mangle]
+#[cfg(b)]
+pub fn foo() {
+    panic!("{}", 1);
+}
+
+#[no_mangle]
+#[cfg(c)]
+pub fn foo() {
+    panic!("{}", "a");
+}
+
+#[no_mangle]
+#[cfg(d)]
+pub fn foo() -> usize {
+    use std::cell::Cell;
+    thread_local!(static A: Cell<Vec<u32>> = Cell::new(Vec::new()));
+    A.try_with(|x| x.take().len()).unwrap_or(0)
+}