From 3a6f19de48366a616eaffd9dd6c4d4712e0b6c27 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Mon, 11 Mar 2019 10:26:08 -0400
Subject: stage1 caching system: detect problematic mtimes

closes #2045
---
 src/cache_hash.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/cache_hash.hpp')

diff --git a/src/cache_hash.hpp b/src/cache_hash.hpp
index 5be02ea405..e2a10270f3 100644
--- a/src/cache_hash.hpp
+++ b/src/cache_hash.hpp
@@ -15,7 +15,7 @@ struct LinkLib;
 
 struct CacheHashFile {
     Buf *path;
-    OsTimeStamp mtime;
+    OsFileAttr attr;
     uint8_t bin_digest[48];
     Buf *contents;
 };
@@ -57,6 +57,8 @@ void cache_file_opt(CacheHash *ch, Buf *path);
 // added any files before calling cache_hit. CacheHash::b64_digest becomes
 // available for use after this call, even in the case of a miss, and it
 // is a hash of the input parameters only.
+// If this function returns ErrorInvalidFormat, that error may be treated
+// as a cache miss.
 Error ATTRIBUTE_MUST_USE cache_hit(CacheHash *ch, Buf *out_b64_digest);
 
 // If you did not get a cache hit, call this function for every file
-- 
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