From: Cody P Schafer <dev@codyps.com>
Date: Sun, 16 Aug 2015 22:58:32 +0000 (-0400)
Subject: talloc: avoid a comparison mismatch & at the same time switch to non-legacy sysconf()
X-Git-Url: http://git.ozlabs.org/?p=ccan;a=commitdiff_plain;h=426bd7e6844f1f01637facaba087f78a5a1d530a

talloc: avoid a comparison mismatch & at the same time switch to non-legacy sysconf()

Without this, gcc warns about a sign mismatch in the comparison.

Signed-off-by: Cody P Schafer <dev@codyps.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---

diff --git a/ccan/talloc/talloc.c b/ccan/talloc/talloc.c
index 0c6bcda9..3ada60fc 100644
--- a/ccan/talloc/talloc.c
+++ b/ccan/talloc/talloc.c
@@ -810,7 +810,7 @@ void *_talloc(const void *context, size_t size)
 
 static int talloc_destroy_pointer(void ***pptr)
 {
-	if ((uintptr_t)**pptr < getpagesize())
+	if ((uintptr_t)**pptr < (uintptr_t)sysconf(_SC_PAGESIZE))
 		TALLOC_ABORT("Double free or invalid talloc_set?");
 	/* Invalidate pointer so it can't be used again. */
 	**pptr = (void *)1;