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, 100 insertions, 0 deletions

diff --git a/gcc/testsuite/c-c++-common/dfp/pr39034.c b/gcc/testsuite/c-c++-common/dfp/pr39034.c
new file mode 100644
index 000000000..2a7eedbdb
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/dfp/pr39034.c
@@ -0,0 +1,100 @@
+/* { dg-do run } */
+/* { dg-options "-O" } */
+
+/* DFP TR 24732 == WG14 / N1176, N1312 */
+/* Based on a test from Fred Tydeman.  */
+
+#include "dfp-dbg.h"
+
+/* Test runtime computations.  */
+
+void
+runtime32 (void)
+{
+  volatile float v1 = 28.f, v2 = 3.f, v3 = 9.f, v4 = 31.f, v5 = 3.f, v6 = 10.f;
+  float      b32 = (float)((v1/v2-v3) - (v4/v5-v6));
+  _Decimal32 d32 = (float)((v1/v2-v3) - (v4/v5-v6));
+
+  if (b32)
+    FAILURE
+  if (d32)
+    FAILURE
+}
+
+void
+runtime64 (void)
+{
+  volatile double v1 = 28., v2 = 3., v3 = 9., v4 = 31., v5 = 3., v6 = 10.;
+  double     b64 = (double)((v1/v2-v3) - (v4/v5-v6));
+  _Decimal64 d64 = (double)((v1/v2-v3) - (v4/v5-v6));
+
+  if (b64)
+    FAILURE
+  if (d64)
+    FAILURE
+}
+
+void
+runtime128 (void)
+{
+  volatile long double v1 = 28.l, v2 = 3.l, v3 = 9.l,
+                       v4 = 31.l, v5 = 3.l, v6 = 10.l;
+  long double b128 = (long double)((v1/v2-v3) - (v4/v5-v6));
+  _Decimal128 d128 = (long double)((v1/v2-v3) - (v4/v5-v6));
+
+  if (b128)
+    FAILURE
+  if (d128)
+    FAILURE
+}
+
+/* Test constant folding.  */
+
+void
+fold32 (void)
+{
+  double     d32 = (float)((28.f/3.f-9.f) - (31.f/3.f-10.f));
+  _Decimal32 b32 = (float)((28.f/3.f-9.f) - (31.f/3.f-10.f));
+
+  if (b32)
+    FAILURE
+  if (d32)
+    FAILURE
+}
+
+void
+fold64 (void)
+{
+  double     b64 = (double)((28./3.-9.) - (31./3.-10.));
+  _Decimal64 d64 = (double)((28./3.-9.) - (31./3.-10.));
+
+  if (b64)
+    FAILURE
+  if (d64)
+    FAILURE
+}
+
+void
+fold128 (void)
+{
+  long double b128 = (long double)((28./3.-9.) - (31./3.-10.));
+  _Decimal128 d128 = (long double)((28./3.-9.) - (31./3.-10.));
+
+  if (b128)
+    FAILURE
+  if (d128)
+    FAILURE
+}
+
+int
+main ()
+{
+  runtime32 ();
+  runtime64 ();
+  runtime128 ();
+  fold32 ();
+  fold64 ();
+  fold128 ();
+
+  FINISH
+}