From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001
From: upstream source tree <ports@midipix.org>
Date: Sun, 15 Mar 2015 20:14:05 -0400
Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified
 gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream
 tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.
---
 gcc/testsuite/gcc.dg/Walways-true-2.c | 60 +++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/Walways-true-2.c

(limited to 'gcc/testsuite/gcc.dg/Walways-true-2.c')

diff --git a/gcc/testsuite/gcc.dg/Walways-true-2.c b/gcc/testsuite/gcc.dg/Walways-true-2.c
new file mode 100644
index 000000000..7f0bb7b10
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Walways-true-2.c
@@ -0,0 +1,60 @@
+/* Make sure we don't assume that a weak symbol is always non-NULL.
+   This is just like Walways-true-1.C, except that it uses a weak
+   symbol.
+   Origin: Ian Lance Taylor <iant@google.com>.  */
+
+/* { dg-do compile } */
+/* { dg-options "-Waddress" } */
+/* { dg-require-weak "" } */
+
+extern int foo (int) __attribute__ ((weak));
+
+int i __attribute__ ((weak));
+
+void
+bar (int a)
+{
+ lab:
+  if (foo)
+    foo (0);
+  if (foo (1))
+    ;
+  if (&i)
+    foo (2);
+  if (i)
+    foo (3);
+  if (&a)	/* { dg-warning "always evaluate as" "correct warning" } */
+    foo (4);
+  if (a)
+    foo (5);
+  if (&&lab)	/* { dg-warning "always evaluate as" "correct warning" } */
+    foo (6);
+  if (foo == 0)
+    foo (7);
+  if (foo (1) == 0)
+    foo (8);
+  if (&i == 0)
+    foo (9);
+  if (i == 0)
+    foo (10);
+  if (&a == 0)	/* { dg-warning "the comparison will always evaluate as 'false'" "correct warning" } */
+    foo (11);
+  if (a == 0)
+    foo (12);
+  if (&&lab == 0) /* { dg-warning "the comparison will always evaluate as 'false'" "correct warning" } */
+    foo (13);
+  if (0 == foo)
+    foo (14);
+  if (0 == foo (1))
+    foo (15);
+  if (0 == &i)
+    foo (16);
+  if (0 == i)
+    foo (17);
+  if (0 == &a)	/* { dg-warning "the comparison will always evaluate as 'false'" "correct warning" } */
+    foo (18);
+  if (0 == a)
+    foo (19);
+  if (0 == &&lab) /* { dg-warning "the comparison will always evaluate as 'false'" "correct warning" } */
+    foo (20);
+}
-- 
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