X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fdf.c;h=22264d30228f5f8d8f5946beec819f20844cfd7f;hb=ead8b249e18e5e5eff16b6260d880f4421404c4e;hp=9d53b0b67eb7c326d3b1811682144d2a7cb6b14b;hpb=8a81e4d5907c43d22a808dbfe088eb4ddab2a16b;p=collectd.git

diff --git a/src/df.c b/src/df.c
index 9d53b0b6..22264d30 100644
--- a/src/df.c
+++ b/src/df.c
@@ -287,9 +287,11 @@ static int df_read (void)
 			 * report negative free space for user. Notice. blk_reserved
 			 * will start to diminish after this. */
 #if HAVE_STATVFS
-			/* Cast is needed to avoid compiler warnings.
+			/* Cast and temporary variable are needed to avoid
+			 * compiler warnings.
 			 * ((struct statvfs).f_bavail is unsigned (POSIX)) */
-			if (((int64_t) statbuf.f_bavail) < 0)
+			int64_t signed_bavail = (int64_t) statbuf.f_bavail;
+			if (signed_bavail < 0)
 				statbuf.f_bavail = 0;
 #elif HAVE_STATFS
 			if (statbuf.f_bavail < 0)