gcc/cp/

[pf3gnuchains/gcc-fork.git] / gcc / testsuite / g++.dg / ext / visibility / arm3.C

diff --git a/gcc/testsuite/g++.dg/ext/visibility/arm3.C b/gcc/testsuite/g++.dg/ext/visibility/arm3.C
index f97813d..9be7082 100644 (file)
--- a/gcc/testsuite/g++.dg/ext/visibility/arm3.C
+++ b/gcc/testsuite/g++.dg/ext/visibility/arm3.C
@@ -1,6 +1,30 @@
 // { dg-do compile { target arm*-*-*eabi* } }
+// { dg-require-dll "" }
 // { dg-options "-fvisibility=hidden" }
-// Class data should be exported.
+
+/* From ARM C++ ABI \S 3.2.5.5:
+
+     A class should be exported unless explicitly tagged otherwise.
+
+   This admonition applies even on DLL-based systems where hidden
+   visibility is the default.  We want -fvisibility=hidden to behave
+   identically to the situation where hidden visibility is the
+   hard-wired default.  So, both A and B are exported classes.
+
+   Furthermore:
+
+     If CAG symbol Y names one of the impedimenta associated with an
+     exported class X:
+
+     ... 
+
+     * Otherwise, if X has no key function:
+     
+       - Y is exported from ... each DLL that refers to X and uses Y.
+
+   So, the type-info and virtual-table symbols associated with A and B
+   must be exported.  */
+
 // { dg-final { scan-not-hidden "_ZTI1A" } }
 // { dg-final { scan-not-hidden "_ZTS1A" } }
 // { dg-final { scan-not-hidden "_ZTV1B" } }