From: Michael Meeks <michael.meeks@suse.com>
Date: Thu, 8 Aug 2013 20:07:27 +0000 (+0200)
Subject: Treat zero length object files as invalid
X-Git-Tag: v3.1.10~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12e2badf739244dc97cad84a6fb1905ec3c4a76d;p=thirdparty%2Fccache.git

Treat zero length object files as invalid

Fix for bug 9972.
---

diff --git a/ccache.c b/ccache.c
index c02868fcf..b20c087bc 100644
--- a/ccache.c
+++ b/ccache.c
@@ -1105,6 +1105,16 @@ from_cache(enum fromcache_call_mode mode, bool put_object_in_manifest)
 		return;
 	}
 
+	/*
+	 * Occasionally, e.g. on hard reset, our cache ends up as just filesystem
+	 * meta-data with no content catch an easy case of this.
+	 */
+	if (st.st_size == 0) {
+		cc_log("Invalid (empty) object file %s in cache", cached_obj);
+		x_unlink(cached_obj);
+		return;
+	}
+
 	/*
 	 * (If mode != FROMCACHE_DIRECT_MODE, the dependency file is created by
 	 * gcc.)