1 files changed, 41 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/trim_1.f90 b/gcc/testsuite/gfortran.dg/trim_1.f90
new file mode 100644
index 000000000..ac1e1f203
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/trim_1.f90
@@ -0,0 +1,41 @@
+! { dg-do run }
+
+! Torture-test TRIM and LEN_TRIM for correctness.
+
+
+! Given a total string length and a trimmed length, construct an
+! appropriate string and check gfortran gets it right.
+
+SUBROUTINE check_trim (full_len, trimmed_len)
+  IMPLICIT NONE
+  INTEGER, INTENT(IN) :: full_len, trimmed_len
+  CHARACTER(LEN=full_len) :: string
+
+  string = ""
+  IF (trimmed_len > 0) THEN
+    string(trimmed_len:trimmed_len) = "x"
+  END IF
+
+  IF (LEN (string) /= full_len &
+      .OR. LEN_TRIM (string) /= trimmed_len &
+      .OR. LEN (TRIM (string)) /= trimmed_len &
+      .OR. TRIM (string) /= string (1:trimmed_len)) THEN
+    PRINT *, full_len, trimmed_len
+    PRINT *, LEN (string), LEN_TRIM (string)
+    CALL abort ()
+  END IF
+END SUBROUTINE check_trim
+
+
+! The main program, check with various combinations.
+
+PROGRAM main
+  IMPLICIT NONE
+  INTEGER :: i, j
+
+  DO i = 0, 20
+    DO j = 0, i
+      CALL check_trim (i, j)
+    END DO
+  END DO
+END PROGRAM main