stage1 caching system: detect problematic mtimes

closes #2045
2019-03-11 10:26:08 -04:00
parent fec4555476
commit 3a6f19de48
8 changed files with 189 additions and 70 deletions
--- a/src/compiler.cpp
+++ b/src/compiler.cpp
@@ -75,8 +75,10 @@ Error get_compiler_id(Buf **result) {
    cache_file(ch, &self_exe_path);

    buf_resize(&saved_compiler_id, 0);
-    if ((err = cache_hit(ch, &saved_compiler_id)))
-        return err;
+    if ((err = cache_hit(ch, &saved_compiler_id))) {
+        if (err != ErrorInvalidFormat)
+            return err;
+    }
    if (buf_len(&saved_compiler_id) != 0) {
        cache_release(ch);
        *result = &saved_compiler_id;