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, 55 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/builtins-10.c b/gcc/testsuite/gcc.dg/builtins-10.c
new file mode 100644
index 000000000..1b141fda2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtins-10.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 2003 Free Software Foundation.
+
+   Check that constant folding of built-in math functions doesn't
+   break anything and produces the expected results.
+
+   Written by Roger Sayle, 2nd April 2003.  */
+
+/* { dg-do link } */
+/* { dg-options "-O2 -ffast-math" } */
+
+extern void link_error(void);
+
+extern double exp(double);
+extern double log(double);
+extern double sqrt(double);
+extern double pow(double,double);
+extern double fabs(double);
+
+void test(double x)
+{
+  if (sqrt(pow(x,4.0)) != x*x)
+    link_error ();
+
+  if (pow(sqrt(x),4.0) != x*x)
+    link_error ();
+
+  if (pow(pow(x,4.0),0.25) != x)
+    /* XFAIL.  PR41098.  */;
+}
+
+void test2(double x, double y, double z)
+{
+  if (sqrt(pow(x,y)) != pow(fabs(x),y*0.5))
+    link_error ();
+
+  if (log(pow(x,y)) != y*log(x))
+    link_error ();
+
+  if (pow(exp(x),y) != exp(x*y))
+    link_error ();
+
+  if (pow(sqrt(x),y) != pow(x,y*0.5))
+    link_error ();
+
+  if (pow(pow(fabs(x),y),z) != pow(fabs(x),y*z))
+    link_error ();
+}
+
+int main()
+{
+  test (2.0);
+  test2 (2.0, 3.0, 4.0);
+  return 0;
+}
+