diff --git a/misc/cgo/testplugin/src/plugin1/plugin1.go b/misc/cgo/testplugin/src/plugin1/plugin1.go
index 7a62242134..edcef2c77e 100644
--- a/misc/cgo/testplugin/src/plugin1/plugin1.go
+++ b/misc/cgo/testplugin/src/plugin1/plugin1.go
@@ -9,7 +9,10 @@ import "C"
 
 import "common"
 
-func F() int { return 3 }
+func F() int {
+	_ = make([]byte, 1<<21) // trigger stack unwind, Issue #18190.
+	return 3
+}
 
 func ReadCommonX() int {
 	return common.X
diff --git a/src/cmd/link/internal/ld/macho.go b/src/cmd/link/internal/ld/macho.go
index c88af64a3a..ff5fe5747b 100644
--- a/src/cmd/link/internal/ld/macho.go
+++ b/src/cmd/link/internal/ld/macho.go
@@ -684,6 +684,20 @@ func machosymorder(ctxt *Link) {
 	}
 }
 
+// machoShouldExport reports whether a symbol needs to be exported.
+//
+// When dynamically linking, all non-local variables and plugin-exported
+// symbols need to be exported.
+func machoShouldExport(ctxt *Link, s *Symbol) bool {
+	if !ctxt.DynlinkingGo() || s.Attr.Local() {
+		return false
+	}
+	if Buildmode == BuildmodePlugin && strings.HasPrefix(s.Extname, *flagPluginPath) {
+		return true
+	}
+	return s.Type != obj.STEXT
+}
+
 func machosymtab(ctxt *Link) {
 	symtab := ctxt.Syms.Lookup(".machosymtab", 0)
 	symstr := ctxt.Syms.Lookup(".machosymstr", 0)
@@ -692,13 +706,11 @@ func machosymtab(ctxt *Link) {
 		s := sortsym[i]
 		Adduint32(ctxt, symtab, uint32(symstr.Size))
 
+		export := machoShouldExport(ctxt, s)
+
 		// In normal buildmodes, only add _ to C symbols, as
 		// Go symbols have dot in the name.
-		//
-		// When dynamically linking, prefix all non-local
-		// symbols with _ as dlsym on darwin requires it to
-		// resolve any symbol.
-		if !strings.Contains(s.Extname, ".") || (ctxt.DynlinkingGo() && !s.Attr.Local()) {
+		if !strings.Contains(s.Extname, ".") || export {
 			Adduint8(ctxt, symstr, '_')
 		}
 
@@ -711,7 +723,7 @@ func machosymtab(ctxt *Link) {
 			Adduint16(ctxt, symtab, 0)                  // desc
 			adduintxx(ctxt, symtab, 0, SysArch.PtrSize) // no value
 		} else {
-			if s.Attr.CgoExport() || (ctxt.DynlinkingGo() && !s.Attr.Local()) {
+			if s.Attr.CgoExport() || export {
 				Adduint8(ctxt, symtab, 0x0f)
 			} else {
 				Adduint8(ctxt, symtab, 0x0e)