Fix gcc -Wwrite-strings warnings that don't require public API changes

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/scan.c b/src/scan.c
index e51d1ab..54c8da5 100644
--- a/src/scan.c
+++ b/src/scan.c
@@ -53,7 +53,7 @@
 					 * minus \ and " for string compat
 					 * and ? to avoid ANSI trigraphs. */
 
-static char *printable =
+static const char *printable =
 " .XoO+@#$%&*=-;:>,<1234567890qwertyuipasdfghjklzxcvbnmMNBVCZ\
 ASDFGHJKLPIUYTREWQ!~^/()_`'][{}|";