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Bluetooth: AT: use explicit unsigned char to avoid array subscript error

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If we use newlib the isdigit (and other similar functions) return an
error as char can possibly be viewed as signed:

usr/include/ctype.h:57:54: error: array subscript has type ‘char’ [-Werror=char-subscripts]
 #define __ctype_lookup(__c) ((__ctype_ptr__+sizeof(""[__c]))[(int)(__c)])

Being explicit about the char being unsigned char deals with this.

Change-Id: I348189e1df11a1fcc58e5810b010b602fd2df33e
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Kumar Gala 2017-04-14 11:22:04 -05:00 • committed by Johan Hedberg
commit 819d3ae9c9
1 changed files with 1 additions and 1 deletions
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2
subsys/bluetooth/host/at.h
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@ -89,7 +89,7 @@ typedef int (*handle_cmd_input_t)(struct at_client *at, struct net_buf *buf,
enum at_cmd_type type);
struct at_client {
char *buf;
unsigned char *buf;
uint8_t pos;
uint8_t buf_max_len;
uint8_t state;