From 15d4695878749c3525c96e856ef08dfb19a2c3e5 Mon Sep 17 00:00:00 2001
From: Evan Martin <martine@danga.com>
Date: Mon, 7 Mar 2011 11:25:10 -0800
Subject: [PATCH] files that have both implicit and explicit edges should be
 implicit

This is just deleting some code that was written in anticipation
of staying memory-resident; when loading a depfile, we don't need
to attempt to update existing entries in the dependency list, we
just need to blindly add them.
---
 src/graph.cc      | 14 +++-----------
 src/graph_test.cc | 24 ++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 11 deletions(-)

diff --git a/src/graph.cc b/src/graph.cc
index bdbcf3b..35ae088 100644
--- a/src/graph.cc
+++ b/src/graph.cc
@@ -213,17 +213,9 @@ bool Edge::LoadDepFile(State* state, DiskInterface* disk_interface,
       return false;
 
     Node* node = state->GetNode(*i);
-    for (vector<Node*>::iterator j = inputs_.begin(); j != inputs_.end(); ++j) {
-      if (*j == node) {
-        node = NULL;
-        break;
-      }
-    }
-    if (node) {
-      inputs_.insert(inputs_.end() - order_only_deps_, node);
-      node->out_edges_.push_back(this);
-      ++implicit_deps_;
-    }
+    inputs_.insert(inputs_.end() - order_only_deps_, node);
+    node->out_edges_.push_back(this);
+    ++implicit_deps_;
   }
 
   return true;
diff --git a/src/graph_test.cc b/src/graph_test.cc
index 758315e..b67cf99 100644
--- a/src/graph_test.cc
+++ b/src/graph_test.cc
@@ -88,3 +88,27 @@ TEST_F(GraphTest, FunkyMakefilePath) {
   // non-canonical path; we should still find it.
   EXPECT_TRUE(GetNode("out.o")->dirty_);
 }
+
+TEST_F(GraphTest, ExplicitImplicit) {
+  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
+"rule catdep\n"
+"  depfile = $out.d\n"
+"  command = cat $in > $out\n"
+"build implicit.h: cat data\n"
+"build out.o: catdep foo.cc || implicit.h\n"));
+  fs_.Create("data", 2, "");
+  fs_.Create("implicit.h", 1, "");
+  fs_.Create("foo.cc", 1, "");
+  fs_.Create("out.o.d", 1, "out.o: implicit.h\n");
+  fs_.Create("out.o", 1, "");
+
+  Edge* edge = GetNode("out.o")->in_edge_;
+  string err;
+  EXPECT_TRUE(edge->RecomputeDirty(&state_, &fs_, &err));
+  ASSERT_EQ("", err);
+
+  // We have both an implicit and an explicit dep on implicit.h.
+  // The implicit dep should "win" (in the sense that it should cause
+  // the output to be dirty).
+  EXPECT_TRUE(GetNode("out.o")->dirty_);
+}
-- 
2.7.4