2007-11-18 Paul Thomas <pault@gcc.gnu.org>

[pf3gnuchains/gcc-fork.git] / gcc / testsuite / gfortran.dg / char_cast_2.f90

diff --git a/gcc/testsuite/gfortran.dg/char_cast_2.f90 b/gcc/testsuite/gfortran.dg/char_cast_2.f90
new file mode 100644 (file)
index 0000000..39566da
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/char_cast_2.f90
@@ -0,0 +1,26 @@
+! { dg-do compile }
+! { dg-options "-fdump-tree-original" }
+! This is the same as achar_4.f90 but checks that the result of the 'merge'
+! reference is correctly cast.
+!
+! The code comes from http://www.star.le.ac.uk/~cgp/fortran.html (by Clive Page)
+! Reported by Thomas Koenig <tkoenig@gcc.gnu.org>
+!
+  if (any (Up ("AbCdEfGhIjKlM") .ne. (/"ABCDEFGHIJKLM"/))) call abort ()
+contains
+  Character (len=20) Function Up (string)
+    Character(len=*) string
+    Up =                                                                &
+     transfer(merge(achar(iachar(transfer(string,"x",len(string)))-     &
+     (ichar('a')-ichar('A')) ),                                         &
+     transfer(string,"x",len(string)) ,                                 &
+     transfer(string,"x",len(string)) >= "a" .and.                      &
+     transfer(string,"x",len(string)) <= "z"), repeat("x", len(string)))
+    return
+  end function Up
+end
+! The sign that all is well is that [S.5][1] appears five times.
+! Platform dependent variations are [S$5][1], [__S_5][1], [S___5][1]
+! so we count the occurrences of 5][1].
+! { dg-final { scan-tree-dump-times "5\\\]\\\[1\\\]" 5 "original" } }
+! { dg-final { cleanup-tree-dump "original" } }