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, 99 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/torture/builtin-math-7.c b/gcc/testsuite/gcc.dg/torture/builtin-math-7.c
new file mode 100644
index 000000000..5bc432924
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/builtin-math-7.c
@@ -0,0 +1,99 @@
+/* Copyright (C) 2009  Free Software Foundation.
+
+   Verify that folding of complex mul and div work correctly.
+
+   Origin: Kaveh R. Ghazi,  August 13, 2009.  */
+
+/* { dg-do run } */
+/* { dg-add-options ieee } */
+
+extern void link_error(int);
+
+/* Evaluate this expression at compile-time.  */
+#define COMPILETIME_TESTIT(TYPE,X,OP,Y,RES) do { \
+  if ((_Complex TYPE)(X) OP (_Complex TYPE)(Y) != (_Complex TYPE)(RES)) \
+    link_error(__LINE__); \
+} while (0)
+
+/* Use this error function for cases which only evaluate at
+   compile-time when optimizing.  */
+#ifdef __OPTIMIZE__
+# define ERROR_FUNC(X) link_error(X)
+#else
+# define ERROR_FUNC(X) __builtin_abort()
+#endif
+
+/* Evaluate this expression at compile-time using static initializers.  */
+#define STATICINIT_TESTIT(TYPE,X,OP,Y,RES) do { \
+  static const _Complex TYPE foo = (_Complex TYPE)(X) OP (_Complex TYPE)(Y); \
+  if (foo != (_Complex TYPE)(RES)) \
+    ERROR_FUNC (__LINE__); \
+} while (0)
+
+/* Evaluate this expression at runtime.  */
+#define RUNTIME_TESTIT(TYPE,X,OP,Y,RES) do { \
+  volatile _Complex TYPE foo; \
+  foo = (_Complex TYPE)(X); \
+  foo OP##= (_Complex TYPE)(Y); \
+  if (foo != (_Complex TYPE)(RES)) \
+    __builtin_abort(); \
+} while (0)
+
+/* Evaluate this expression at compile-time and runtime.  */
+#define TESTIT(TYPE,X,OP,Y,RES) do { \
+  STATICINIT_TESTIT(TYPE,X,OP,Y,RES); \
+  COMPILETIME_TESTIT(TYPE,X,OP,Y,RES); \
+  RUNTIME_TESTIT(TYPE,X,OP,Y,RES); \
+} while (0)
+
+/* Either the real or imaginary parts should be infinity.  */
+#define TEST_ONE_PART_INF(VAL) do { \
+  static const _Complex double foo = (VAL); \
+  if (! __builtin_isinf(__real foo) && ! __builtin_isinf(__imag foo)) \
+    ERROR_FUNC (__LINE__); \
+  if (! __builtin_isinf(__real (VAL)) && ! __builtin_isinf(__imag (VAL))) \
+    __builtin_abort(); \
+} while (0)
+
+int main()
+{
+  /* Test some regular finite values.  */
+  TESTIT (double, 3.+4.i, *, 2, 6+8i);
+  TESTIT (double, 3.+4.i, /, 2, 1.5+2i);
+  TESTIT (int, 3+4i, *, 2, 6+8i);
+  TESTIT (int, 3+4i, /, 2, 1+2i);
+
+  TESTIT (double, 3.+4.i, *, 2+5i, -14+23i);
+  TESTIT (double, 3.+4.i, /, 5i, .8-.6i);
+  TESTIT (int, 3+4i, *, 2+5i, -14+23i);
+  TESTIT (int, 30+40i, /, 5i, 8-6i);
+  TESTIT (int, 14+6i, /, 7+3i, 2);
+  TESTIT (int, 8+24i, /, 4+12i, 2);
+
+  /* Test that we don't overflow.  */
+  TESTIT (double,
+	  (__DBL_MAX__ * 0.5 + __DBL_MAX__ * 0.5i),
+	  /,
+	  (__DBL_MAX__ * 0.25 + __DBL_MAX__ * 0.25i),
+	  2);
+
+  /* Test for accuracy.  */
+  COMPILETIME_TESTIT (double,
+		      (1 + __DBL_EPSILON__ + 1i),
+		      *,
+		      (1 - __DBL_EPSILON__ + 1i),
+		      -4.93038065763132378382330353301741393545754021943139377981e-32+2i);
+
+  /* This becomes (NaN + iInf).  */
+#define VAL1 ((_Complex double)__builtin_inf() * 1i)
+
+  /* Test some C99 Annex G special cases.  */
+  TEST_ONE_PART_INF ((VAL1) * (VAL1));
+  TEST_ONE_PART_INF ((_Complex double)1 / (_Complex double)0);
+  TEST_ONE_PART_INF ((VAL1) / (_Complex double)1);
+
+  RUNTIME_TESTIT (double, 1, /, VAL1, 0);
+  STATICINIT_TESTIT (double, 1, /, VAL1, 0);
+
+  return 0;
+}