1 files changed, 72 insertions, 0 deletions
diff --git a/test/asmhdr.dir/main.go b/test/asmhdr.dir/main.go
new file mode 100644
index 0000000..4e1813d
--- /dev/null
+++ b/test/asmhdr.dir/main.go
@@ -0,0 +1,72 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import "unsafe"
+
+const (
+	smallInt = 42
+
+	// For bigInt, we use a value that's too big for an int64, but still
+	// fits in uint64. go/constant uses a different representation for
+	// values larger than int64, but the cmd/asm parser can't parse
+	// anything bigger than a uint64.
+	bigInt = 0xffffffffffffffff
+
+	stringVal = "test"
+
+	longStringVal = "this_is_a_string_constant_longer_than_seventy_characters_which_used_to_fail_see_issue_50253"
+)
+
+var (
+	smallIntAsm   int64
+	bigIntAsm     uint64
+	stringAsm     [len(stringVal)]byte
+	longStringAsm [len(longStringVal)]byte
+)
+
+type typ struct {
+	a uint64
+	b [100]uint8
+	c uint8
+}
+
+var (
+	typSize uint64
+
+	typA, typB, typC uint64
+)
+
+func main() {
+	if smallInt != smallIntAsm {
+		println("smallInt", smallInt, "!=", smallIntAsm)
+	}
+	if bigInt != bigIntAsm {
+		println("bigInt", uint64(bigInt), "!=", bigIntAsm)
+	}
+	if stringVal != string(stringAsm[:]) {
+		println("stringVal", stringVal, "!=", string(stringAsm[:]))
+	}
+	if longStringVal != string(longStringAsm[:]) {
+		println("longStringVal", longStringVal, "!=", string(longStringAsm[:]))
+	}
+
+	// We also include boolean consts in go_asm.h, but they're
+	// defined to be "true" or "false", and it's not clear how to
+	// use that in assembly.
+
+	if want := unsafe.Sizeof(typ{}); want != uintptr(typSize) {
+		println("typSize", want, "!=", typSize)
+	}
+	if want := unsafe.Offsetof(typ{}.a); want != uintptr(typA) {
+		println("typA", want, "!=", typA)
+	}
+	if want := unsafe.Offsetof(typ{}.b); want != uintptr(typB) {
+		println("typB", want, "!=", typB)
+	}
+	if want := unsafe.Offsetof(typ{}.c); want != uintptr(typC) {
+		println("typC", want, "!=", typC)
+	}
+}