gprs_cipher_core: Use typecase to avoid sanitizer error
This resolves
gprs_cipher_core.c:118:37: runtime error: left shift of 1 by 31 places cannot be represented in type 'int'
Change-Id: Ib1866595030ad9d11c886621ce69632462befa3a
diff --git a/src/gsm/gprs_cipher_core.c b/src/gsm/gprs_cipher_core.c
index 8f020b3..da6e0a8 100644
--- a/src/gsm/gprs_cipher_core.c
+++ b/src/gsm/gprs_cipher_core.c
@@ -115,7 +115,7 @@
/* GSM TS 04.64 / Section A.2.1 : Generation of 'input' */
uint32_t gprs_cipher_gen_input_ui(uint32_t iov_ui, uint8_t sapi, uint32_t lfn, uint32_t oc)
{
- uint32_t sx = ((1<<27) * sapi) + (1<<31);
+ uint32_t sx = ((1<<27) * sapi) + ((uint32_t ) 1<<31);
return (iov_ui ^ sx) + lfn + oc;
}