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
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if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
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1 files changed, 42 insertions, 0 deletions

diff --git a/gcc/testsuite/gfortran.dg/gamma_5.f90 b/gcc/testsuite/gfortran.dg/gamma_5.f90
new file mode 100644
index 000000000..467c57962
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/gamma_5.f90
@@ -0,0 +1,42 @@
+! { dg-do run }
+! PR 33683 - we used to pick up the wrong gamma function
+! from the library on some systems.
+program main
+  implicit none
+  integer, parameter :: n_max = 20
+  double precision, dimension(0:n_max) :: c
+  double precision :: pi
+  integer :: n
+  double precision :: td, xd
+  real :: ts,xs
+
+  pi = 4 * atan(1.d0)
+  c(0) = 1.
+  do n=1, n_max
+     c(n) = (2*n-1)*c(n-1)*0.5d0
+  end do
+
+  do n=1, n_max
+     xs = n + 0.5
+     xd = n + 0.5d0
+     td = c(n)*sqrt(pi)
+     ts = c(n)*sqrt(pi)
+     if (abs(gamma(xs)-ts)/ts > 9e-6) call abort
+     if (abs(gamma(xd)-td)/td > 5e-14) call abort
+  end do
+  call tst_s(2.3, gamma(2.3))
+  call tst_s(3.7, gamma(3.7))
+  call tst_s(5.5, gamma(5.5))
+  call tst_d(4.2d0, gamma(4.2d0))
+  call tst_d(8.1d0, gamma(8.1d0))
+contains
+  subroutine tst_s(a, b)
+    real :: a, b
+    if (abs(gamma(a) - b)/b > 1e-6) call abort
+  end subroutine tst_s
+
+  subroutine tst_d(a, b)
+    double precision :: a,b
+    if (abs(gamma(a) - b)/b > 5e-14) call abort
+  end subroutine tst_d
+end program main