commit fb08b015f2db1369af3fceb43e18503685ce7e22
author Tianjie Xu <xunchang@google.com> Sat Mar 07 17:22:40 2020 -0800
committer Tianjie Xu <xunchang@google.com> Sat Mar 07 17:54:11 2020 -0800
tree d97eb263e3fe95b54dbe63ada6a0c42b97108310
parent 917b6669662c6ccc738392f5656a9a581ee9697d

Address the warnings in recovery code

The following warnngs generate when compile with WITH_TIDY=1

.../bootable/recovery/applypatch/imgdiff.cpp:968:7: warning: 'src_ranges' used after it was moved [bugprone-use-after-move]
      src_ranges.Clear();
      ^
.../bootable/recovery/applypatch/imgdiff.cpp:966:27: note: move occurred here
        split_src_ranges->push_back(std::move(src_ranges));

The logic itself seems correct since the class is meant to be cleared
after move. I feel the std::move in 966 is actually useful to call the
move constructor in RangeSet. So I just modify L968 to suppress the
warning.

Less important ones:
bootable/recovery/applypatch/applypatch_modes.cpp:79:34: warning: passing result of std::move() as a const reference argument; no move will actually happen [performance-move-const-arg]
bootable/recovery/applypatch/imgdiff.cpp:1038:30: warning: passing result of std::move() as a const reference argument; no move will actually happen [performance-move-const-arg]
bootable/recovery/applypatch/imgdiff.cpp:1054:48: warning: passing result of std::move() as a const reference argument; no move will actually happen [performance-move-const-arg]
bootable/recovery/updater/include/private/commands.h:310:16: warning: std::move of the variable 'patch' of the trivially-copyable type 'PatchInfo' has no effect; remove std::move() [performance-move-const-arg]
bootable/recovery/updater/install.cpp:663:43: warning: passing result of std::move() as a const reference argument; no move will actually happen [performance-move-const-arg]

Bug: 150955971
Test: build
Change-Id: Ieb75f0229c47d470d4f5ac93fab39c5698d3f914

applypatch/imgdiff.cpp

diff --git a/applypatch/imgdiff.cpp b/applypatch/imgdiff.cpp
index 6ad4a61..91007ac 100644
--- a/applypatch/imgdiff.cpp
+++ b/applypatch/imgdiff.cpp
@@ -965,7 +965,7 @@
         used_src_ranges.Insert(src_ranges);
         split_src_ranges->push_back(std::move(src_ranges));
       }
-      src_ranges.Clear();
+      src_ranges = {};
 
       // We don't have enough space for the current chunk; start a new split image and handle
       // this chunk there.
@@ -1035,7 +1035,7 @@
   }
 
   ZipModeImage split_tgt_image(false);
-  split_tgt_image.Initialize(std::move(aligned_tgt_chunks), {});
+  split_tgt_image.Initialize(aligned_tgt_chunks, {});
   split_tgt_image.MergeAdjacentNormalChunks();
 
   // Construct the dummy source file based on the src_ranges.
@@ -1051,7 +1051,7 @@
   CHECK(!src_content.empty());
 
   ZipModeImage split_src_image(true);
-  split_src_image.Initialize(split_src_chunks, std::move(src_content));
+  split_src_image.Initialize(split_src_chunks, src_content);
 
   split_tgt_images->push_back(std::move(split_tgt_image));
   split_src_images->push_back(std::move(split_src_image));

edify/include/edify/expr.h

diff --git a/edify/include/edify/expr.h b/edify/include/edify/expr.h
index cd9c701..3ddf7f5 100644
--- a/edify/include/edify/expr.h
+++ b/edify/include/edify/expr.h
@@ -60,7 +60,7 @@
     BLOB = 2,
   };
 
-  Value(Type type, const std::string& str) : type(type), data(str) {}
+  Value(Type type, std::string str) : type(type), data(std::move(str)) {}
 
   Type type;
   std::string data;

updater/include/private/commands.h

diff --git a/updater/include/private/commands.h b/updater/include/private/commands.h
index 79f9154..7a23bb7 100644
--- a/updater/include/private/commands.h
+++ b/updater/include/private/commands.h
@@ -307,7 +307,7 @@
       : type_(type),
         index_(index),
         cmdline_(std::move(cmdline)),
-        patch_(std::move(patch)),
+        patch_(patch),
         target_(std::move(target)),
         source_(std::move(source)),
         stash_(std::move(stash)) {}