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link_key_db: use sizeof to compute buffer size at compile time

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This commit is contained in:
Matthias Ringwald 2016-06-07 10:05:49 +02:00
parent 7dd999b710
commit 1890600882
1 changed files with 2 additions and 1 deletions
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platform/posix/btstack_link_key_db_fs.c
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@ -52,7 +52,8 @@
#define LINK_KEY_STRING_LEN 17
static bd_addr_t local_addr;
static char keypath[strlen(LINK_KEY_PATH) + strlen(LINK_KEY_PREFIX) + LINK_KEY_STRING_LEN + strlen(LINK_KEY_FOR) + LINK_KEY_STRING_LEN + strlen(LINK_KEY_SUFFIX) + 1];
// note: sizeof for string literals works at compile time while strlen only works with some optimizations turned on. sizeof inlcudes the  \0
static char keypath[sizeof(LINK_KEY_PATH) + sizeof(LINK_KEY_PREFIX) + LINK_KEY_STRING_LEN + sizeof(LINK_KEY_FOR) + LINK_KEY_STRING_LEN + sizeof(LINK_KEY_SUFFIX) + 1];
static char bd_addr_to_dash_str_buffer[6*3]; // 12-45-78-01-34-67\0
static char * bd_addr_to_dash_str(bd_addr_t addr){