[libvirt] [PATCH] build: avoid type-punning compiler warning
On RHEL 5, with gcc 4.1.2:
rpc/virnetsaslcontext.c: In function 'virNetSASLSessionUpdateBufSize':
rpc/virnetsaslcontext.c:396: warning: dereferncing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
* src/rpc/virnetsaslcontext.c (virNetSASLSessionUpdateBufSize):
Use a union to work around gcc warning.
---
src/rpc/virnetsaslcontext.c | 11 +++++++----
1 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/src/rpc/virnetsaslcontext.c b/src/rpc/virnetsaslcontext.c
index 71796b9..a0752dd 100644
--- a/src/rpc/virnetsaslcontext.c
+++ b/src/rpc/virnetsaslcontext.c
@@ -390,10 +390,13 @@ cleanup:
static int virNetSASLSessionUpdateBufSize(virNetSASLSessionPtr sasl)
{
- unsigned *maxbufsize;
+ union {
+ unsigned *maxbufsize;
+ const void *ptr;
+ } u;
int err;
- err = sasl_getprop(sasl->conn, SASL_MAXOUTBUF, (const void **)&maxbufsize);
+ err = sasl_getprop(sasl->conn, SASL_MAXOUTBUF, &u.ptr);
if (err != SASL_OK) {
virNetError(VIR_ERR_INTERNAL_ERROR,
_("cannot get security props %d (%s)"),
@@ -402,8 +405,8 @@ static int virNetSASLSessionUpdateBufSize(virNetSASLSessionPtr sasl)
}
VIR_DEBUG("Negotiated bufsize is %u vs requested size %zu",
- *maxbufsize, sasl->maxbufsize);
- sasl->maxbufsize = *maxbufsize;
+ *u.maxbufsize, sasl->maxbufsize);
+ sasl->maxbufsize = *u.maxbufsize;
return 0;
}
--
1.7.4.4