From 42e0dc0cc3d20b4c222151dc7a9b5e63dabac734 Mon Sep 17 00:00:00 2001 From: Jacob Erlbeck Date: Tue, 8 Oct 2013 12:04:41 +0200 Subject: msgb: Add may_alias attribute to struct libgb_msgb_cb This explicitely allows aliasing of this struct to avoid the warning shown below. Note, that this warning isn't show when '-fno-strict-aliasing' is used. Addresses: gb/gprs_ns_test.c:85:54: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] --- include/osmocom/gprs/gprs_msgb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/osmocom/gprs/gprs_msgb.h b/include/osmocom/gprs/gprs_msgb.h index f4c85547..e277696b 100644 --- a/include/osmocom/gprs/gprs_msgb.h +++ b/include/osmocom/gprs/gprs_msgb.h @@ -16,7 +16,7 @@ struct libgb_msgb_cb { /* Identifier of a MS (inside BTS), equal to 'struct sgsn_mm_ctx' */ uint32_t tlli; -} __attribute__((packed)); +} __attribute__((packed, may_alias)); #define LIBGB_MSGB_CB(__msgb) ((struct libgb_msgb_cb *)&((__msgb)->cb[0])) #define msgb_tlli(__x) LIBGB_MSGB_CB(__x)->tlli #define msgb_nsei(__x) LIBGB_MSGB_CB(__x)->nsei -- cgit v1.2.3