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, 22 insertions, 0 deletions

diff --git a/gcc/testsuite/gfortran.dg/char_length_2.f90 b/gcc/testsuite/gfortran.dg/char_length_2.f90
new file mode 100644
index 000000000..5673a2ed5
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/char_length_2.f90
@@ -0,0 +1,22 @@
+! { dg-do link }
+! { dg-options "-Wsurprising" }
+! Tests the fix for PR 31250
+! CHARACTER lengths weren't reduced early enough for all checks of
+! them to be meaningful.  Furthermore negative string lengths weren't
+! dealt with correctly.
+CHARACTER(len=0) :: c1   ! This is OK.
+CHARACTER(len=-1) :: c2  ! { dg-warning "has negative length" }
+PARAMETER(I=-100)
+CHARACTER(len=I) :: c3   ! { dg-warning "has negative length" }
+CHARACTER(len=min(I,500)) :: c4  ! { dg-warning "has negative length" }
+CHARACTER(len=max(I,500)) :: d1  ! no warning
+CHARACTER(len=5) :: d2   ! no warning
+
+if (len(c1) .ne. 0) call link_error ()
+if (len(c2) .ne. len(c1)) call link_error ()
+if (len(c3) .ne. len(c2)) call link_error ()
+if (len(c4) .ne. len(c3)) call link_error ()
+
+if (len(d1) .ne. 500) call link_error ()
+if (len(d2) .ne. 5) call link_error ()
+END