From 0b84d51633d3752ed05ba0e48dd4db420fffa757 Mon Sep 17 00:00:00 2001
From: yuyangzi <289633152@qq.com>
Date: Tue, 26 Jan 2016 17:32:37 +0800
Subject: [PATCH] fix cmake error

---
 samples/CMakeLists.txt          | 6 +++---
 samples/sample8_multithread.cpp | 7 ++++---
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/samples/CMakeLists.txt b/samples/CMakeLists.txt
index f5dc1e5a..1b12207f 100644
--- a/samples/CMakeLists.txt
+++ b/samples/CMakeLists.txt
@@ -30,7 +30,7 @@ aux_source_directory(${PROJECT_SOURCE_DIR} SRC_LIST)
 
 list(REMOVE_ITEM SRC_LIST ${PROJECT_SOURCE_DIR}/sample2_yield.cpp)
 add_executable(sample2_yield.t sample2_yield.cpp)
-if (${depend_libgo})
+if (depend_libgo)
     add_dependencies(sample2_yield.t ${depend_libgo})
 endif()
 
@@ -44,7 +44,7 @@ else()
     target_link_libraries(sample2_yield.t ${LINK_ARGS} rt)
 
     add_executable(sample9_curl.t sample9_curl.cpp)
-    if (${depend_libgo})
+    if (depend_libgo)
         add_dependencies(sample9_curl.t ${depend_libgo})
     endif()
     target_link_libraries(sample9_curl.t ${LINK_ARGS} rt -lcurl)
@@ -56,7 +56,7 @@ foreach(var ${SRC_LIST})
 
     set(target ${tgt}.t)
     add_executable(${target} ${var})
-    if (${depend_libgo})
+    if (depend_libgo)
         add_dependencies(${target} ${depend_libgo})
     endif()
     if (WIN32)
diff --git a/samples/sample8_multithread.cpp b/samples/sample8_multithread.cpp
index 56118da5..d690e359 100644
--- a/samples/sample8_multithread.cpp
+++ b/samples/sample8_multithread.cpp
@@ -12,12 +12,13 @@ using namespace std;
 using namespace std::chrono;
 
 // 大计算量的函数
-int foo()
+int c = 0;
+void foo()
 {
     int v = 1;
     for (int i = 1; i < 20000000; ++i)
         v *= i;
-    return v;
+	c += v;
 }
 
 int main()
@@ -46,7 +47,7 @@ int main()
     end = system_clock::now();
     cout << "go with coroutine, cost ";
     cout << duration_cast<milliseconds>(end - start).count() << "ms" << endl;
-
+	cout << "result zero:" << c * 0 << endl;
     return 0;
 }