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-rw-r--r--gcc/fortran/options.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/fortran/options.c b/gcc/fortran/options.c
index 31c4076..fbcb94e 100644
--- a/gcc/fortran/options.c
+++ b/gcc/fortran/options.c
@@ -538,6 +538,8 @@ gfc_handle_option (size_t scode, const char *arg, int value)
break;
case OPT_ffree_line_length_:
+ if (value != 0 && value < 4)
+ gfc_fatal_error ("Free line length must be at least three.");
gfc_option.free_line_length = value;
break;