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[hurd,commited] hurd: Silence warning
- From: Samuel Thibault <samuel dot thibault at ens-lyon dot org>
- To: libc-alpha at sourceware dot org
- Cc: Samuel Thibault <samuel dot thibault at ens-lyon dot org>
- Date: Wed, 4 Apr 2018 02:06:48 +0200
- Subject: [hurd,commited] hurd: Silence warning
* hurd/hurdsig.c (interrupted_reply_port_location): Use
DIAG_IGNORE_NEEDS_COMMENT to silence warning with GCC 6 and before.
---
ChangeLog | 2 ++
hurd/hurdsig.c | 8 ++++++++
2 files changed, 10 insertions(+)
diff --git a/ChangeLog b/ChangeLog
index cc9613239d..cbe62ee88d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -37,6 +37,8 @@
* sysdeps/mach/hurd/if_index.c (__if_nametoindex): Return ENODEV if
ifname is too long.
+ * hurd/hurdsig.c (interrupted_reply_port_location): Use
+ DIAG_IGNORE_NEEDS_COMMENT to silence warning with GCC 6 and before.
2018-04-03 Wilco Dijkstra <wdijkstr@arm.com>
diff --git a/hurd/hurdsig.c b/hurd/hurdsig.c
index 31e8d336e3..6b73dcdbf3 100644
--- a/hurd/hurdsig.c
+++ b/hurd/hurdsig.c
@@ -33,6 +33,8 @@
#include "hurdmalloc.h" /* XXX */
#include "../locale/localeinfo.h"
+#include <libc-diag.h>
+
const char *_hurdsig_getenv (const char *);
struct mutex _hurd_siglock;
@@ -246,8 +248,14 @@ interrupted_reply_port_location (thread_t thread,
/* Faulted trying to read the TCB. */
return NULL;
+ DIAG_PUSH_NEEDS_COMMENT;
+ /* GCC 6 and before seem to be confused by the setjmp call inside
+ _hurdsig_catch_memory_fault and think that we may be returning a second
+ time to here with portloc uninitialized (but we never do). */
+ DIAG_IGNORE_NEEDS_COMMENT (6, "-Wmaybe-uninitialized");
/* Fault now if this pointer is bogus. */
*(volatile mach_port_t *) portloc = *portloc;
+ DIAG_POP_NEEDS_COMMENT;
if (sigthread)
_hurdsig_end_catch_fault ();
--
2.16.2