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-rw-r--r--usr.bin/sed/extern.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/usr.bin/sed/extern.h b/usr.bin/sed/extern.h
index 0a88e97..0d13631 100644
--- a/usr.bin/sed/extern.h
+++ b/usr.bin/sed/extern.h
@@ -46,7 +46,7 @@ extern u_long linenum;
extern int appendnum;
extern int lastline;
extern int aflag, eflag, nflag;
-extern char *fname;
+extern const char *fname;
extern int rflags; /* regex flags to use */
void cfclose __P((struct s_command *, struct s_command *));
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