1 files changed, 62 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/attr-alias-3.c b/gcc-4.9/gcc/testsuite/gcc.dg/attr-alias-3.c
new file mode 100644
index 000000000..6ff1b475a
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/attr-alias-3.c
@@ -0,0 +1,62 @@
+// { dg-do link }
+// { dg-skip-if "" { "powerpc-ibm-aix*" } { "*" } { "" } }
+// { dg-require-alias "" }
+// { dg-options "-O2 -fno-common" }
+
+// Copyright 2005 Free Software Foundation, Inc.
+// Contributed by Alexandre Oliva <aoliva@redhat.com>
+
+// PR middle-end/24295
+
+// The unit-at-a-time call graph code used to fail to emit variables
+// without external linkage that were only used indirectly, through
+// aliases.  Although the PR above is about #pragma weak-introduced
+// aliases, the underlying machinery is the same.
+
+#ifndef ATTRIBUTE_USED
+# define ATTRIBUTE_USED __attribute__((used))
+#endif
+
+static int lv1;
+extern int Av1a __attribute__((alias ("lv1")));
+int *pv1a = &Av1a;
+
+static int lv2;
+extern int Av2a __attribute__((alias ("lv2")));
+int *pv2a = &lv2;
+
+static int lv3;
+extern int Av3a __attribute__((alias ("lv3")));
+static int *pv3a ATTRIBUTE_USED = &Av3a;
+
+static int lv4;
+extern int Av4a __attribute__((alias ("lv4")));
+static int *pv4a = &Av4a;
+
+typedef void ftype(void);
+
+static void lf1(void) {}
+extern ftype Af1a __attribute__((alias ("lf1")));
+ftype *pf1a = &Af1a;
+
+static void lf2(void) {}
+extern ftype Af2a __attribute__((alias ("lf2")));
+ftype *pf2a = &Af2a;
+
+static void lf3(void) {}
+extern ftype Af3a __attribute__((alias ("lf3")));
+static ftype *pf3a ATTRIBUTE_USED = &Af3a;
+
+static void lf4(void) {}
+extern ftype Af4a __attribute__((alias ("lf4")));
+static ftype *pf4a = &Af4a;
+
+main() {
+#ifdef __mips
+  /* Use real asm for MIPS, to stop the assembler warning about
+     orphaned high-part relocations.  */
+  asm volatile ("lw $2,%0\n\tlw $2,%1" : : "m" (pv4a), "m" (pf4a) : "$2");
+#else
+  asm volatile ("" : : "m" (pv4a), "m" (pf4a));
+#endif
+}