diff --git a/regression/ansi-c/asm4/main.c b/regression/ansi-c/asm4/main.c
new file mode 100644
index 00000000000..a22fd92ddc7
--- /dev/null
+++ b/regression/ansi-c/asm4/main.c
@@ -0,0 +1,26 @@
+// from Fedora's glibc
+struct dirent
+{
+  int dummy;
+};
+
+struct dirent64
+{
+  int dummy;
+};
+
+#ifdef __GNUC__
+extern struct dirent *readdir(void *__dirp) __asm__(
+  ""
+  "readdir64");
+extern struct dirent64 *readdir64(void *__dirp);
+#endif
+
+int main()
+{
+#ifdef __GNUC__
+  int x;
+  (void)readdir(&x);
+#endif
+  return 0;
+}
diff --git a/regression/ansi-c/asm4/test.desc b/regression/ansi-c/asm4/test.desc
new file mode 100644
index 00000000000..b9903aa3c3d
--- /dev/null
+++ b/regression/ansi-c/asm4/test.desc
@@ -0,0 +1,8 @@
+CORE test-c++-front-end
+main.c
+
+^EXIT=0$
+^SIGNAL=0$
+--
+^warning: ignoring
+^CONVERSION ERROR$
diff --git a/src/ansi-c/c_typecheck_base.cpp b/src/ansi-c/c_typecheck_base.cpp
index b3889fb343a..4346c6870e7 100644
--- a/src/ansi-c/c_typecheck_base.cpp
+++ b/src/ansi-c/c_typecheck_base.cpp
@@ -646,6 +646,8 @@ void c_typecheck_baset::apply_asm_label(
   {
     symbol.name=asm_label;
     symbol.base_name=asm_label;
+    if(symbol.type.id() == ID_code)
+      symbol.type.set(ID_C_incomplete, true);
   }
 
   if(symbol.name!=orig_name)