obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

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.

1 files changed, 26 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/gnu99-const-expr-2.c b/gcc/testsuite/gcc.dg/gnu99-const-expr-2.c
new file mode 100644
index 000000000..f9acef81a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/gnu99-const-expr-2.c
@@ -0,0 +1,26 @@
+/* Test for constant expressions: __builtin_choose_expr.  */
+/* Origin: Joseph Myers <joseph@codesourcery.com> */
+/* { dg-do compile } */
+/* { dg-options "-std=gnu99 -pedantic-errors" } */
+
+#include <limits.h>
+
+int a, b, c;
+
+void
+f (void)
+{
+  /* __builtin_choose_expr acts exactly like the chosen argument for
+     all constant expression purposes.  */
+  enum e {
+    E1 = __builtin_choose_expr (1, 1, ++b)
+  };
+  /* The first argument to __builtin_choose_expr must be an integer
+     constant expression.  */
+  a = __builtin_choose_expr ((void *)0, b, c); /* { dg-error "constant" } */
+  a = __builtin_choose_expr (0 * (INT_MAX + 1), b, c); /* { dg-warning "integer overflow in expression" } */
+  /* { dg-error "overflow in constant expression" "constant" { target *-*-* } 21 } */
+  a = __builtin_choose_expr (1 / 0, 0, 0); /* { dg-warning "division by zero" } */
+  /* { dg-error "not a constant" "error" { target *-*-* } 23 } */
+  a = __builtin_choose_expr ((1 ? 1 : a), b, c); /* { dg-error "constant" } */
+}