diff --git a/NEWS.md b/NEWS.md
index f7eeae3a..2b3dea98 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -4,7 +4,7 @@ Red Panda C++ Version 1.0.2
   - enhancement: better display when input with IM under column mode
   - enhancement: better display current lines under column mode
   - change: test to use utf-8 as the default encoding (prepare to use libclang to implement parser)
-  - fix: auto syntax check use wrong charset, if a file in editing is not encoded with ANSI encoding
+  - fix: auto syntax check fail, if the file is not gbk and includes files encoded with utf8
   - enhancement: timeout for problem case test
   - enhancement: slightly reduce start up time
   - enhancement: use icon to indicate missing project files in the project view
diff --git a/RedPandaIDE/compiler/compiler.cpp b/RedPandaIDE/compiler/compiler.cpp
index a09f747d..a8d44b47 100644
--- a/RedPandaIDE/compiler/compiler.cpp
+++ b/RedPandaIDE/compiler/compiler.cpp
@@ -181,6 +181,11 @@ Settings::PCompilerSet Compiler::compilerSet()
     return pSettings->compilerSets().defaultSet();
 }
 
+QByteArray Compiler::pipedText()
+{
+    return QByteArray();
+}
+
 void Compiler::processOutput(QString &line)
 {
     if (line == COMPILE_PROCESS_END) {
@@ -276,7 +281,7 @@ void Compiler::stopCompile()
     mStop = true;
 }
 
-QString Compiler::getCharsetArgument(const QByteArray& encoding)
+QString Compiler::getCharsetArgument(const QByteArray& encoding, bool checkSyntax)
 {
     QString result;
     if (compilerSet()->autoAddCharsetParams() && encoding != ENCODING_ASCII
@@ -297,9 +302,13 @@ QString Compiler::getCharsetArgument(const QByteArray& encoding)
         } else {
             execEncodingName = compilerSetExecCharset;
         }
-        if (encodingName!=execEncodingName)
+        if (checkSyntax) {
+            result += QString(" -finput-charset=%1")
+                    .arg(encodingName);
+        } else if (encodingName!=execEncodingName) {
             result += QString(" -finput-charset=%1 -fexec-charset=%2")
                     .arg(encodingName, execEncodingName);
+        }
     }
     return result;
 }
@@ -551,7 +560,7 @@ QString Compiler::parseFileIncludesForAutolink(
     return result;
 }
 
-void Compiler::runCommand(const QString &cmd, const QString  &arguments, const QString &workingDir, const QString& inputText)
+void Compiler::runCommand(const QString &cmd, const QString  &arguments, const QString &workingDir, const QByteArray& inputText)
 {
     QProcess process;
     mStop = false;
@@ -591,11 +600,17 @@ void Compiler::runCommand(const QString &cmd, const QString  &arguments, const Q
     });
     process.start();
     process.waitForStarted(5000);
-    if (!inputText.isEmpty())
-        process.write(inputText.toLocal8Bit());
-    process.closeWriteChannel();
+    if (!inputText.isEmpty()) {
+        process.write(inputText);
+        process.waitForFinished(0);
+    }
+    bool writeChannelClosed = false;
     while (true) {
-        process.waitForFinished(1000);
+        if (process.bytesToWrite()==0 && !writeChannelClosed ) {
+            writeChannelClosed=true;
+            process.closeWriteChannel();
+        }
+        process.waitForFinished(100);
         if (process.state()!=QProcess::Running) {
             break;
         }
diff --git a/RedPandaIDE/compiler/compiler.h b/RedPandaIDE/compiler/compiler.h
index aa5a5c27..df680b74 100644
--- a/RedPandaIDE/compiler/compiler.h
+++ b/RedPandaIDE/compiler/compiler.h
@@ -62,9 +62,9 @@ protected:
 protected:
     virtual Settings::PCompilerSet compilerSet();
     virtual bool prepareForCompile() = 0;
-    virtual QString pipedText() = 0;
+    virtual QByteArray pipedText();
     virtual bool prepareForRebuild() = 0;
-    virtual QString getCharsetArgument(const QByteArray& encoding);
+    virtual QString getCharsetArgument(const QByteArray& encoding,bool onlyCheckSyntax);
     virtual QString getCCompileArguments(bool checkSyntax);
     virtual QString getCppCompileArguments(bool checkSyntax);
     virtual QString getCIncludeArguments();
@@ -77,7 +77,7 @@ protected:
             PCppParser& parser);
     void log(const QString& msg);
     void error(const QString& msg);
-    void runCommand(const QString& cmd, const QString& arguments, const QString& workingDir, const QString& inputText=QString());
+    void runCommand(const QString& cmd, const QString& arguments, const QString& workingDir, const QByteArray& inputText=QByteArray());
 
 protected:
     bool mSilent;
diff --git a/RedPandaIDE/compiler/executablerunner.cpp b/RedPandaIDE/compiler/executablerunner.cpp
index 77e2843e..23060659 100644
--- a/RedPandaIDE/compiler/executablerunner.cpp
+++ b/RedPandaIDE/compiler/executablerunner.cpp
@@ -178,13 +178,20 @@ void ExecutableRunner::run()
     mProcess->waitForStarted(5000);
     if (mProcess->state()==QProcess::Running && redirectInput()) {
         mProcess->write(readFileToByteArray(redirectInputFilename()));
+        mProcess->waitForFinished(0);
     }
     bool writeChannelClosed = false;
     while (true) {
+        if (mProcess->bytesToWrite()==0 && redirectInput() && !writeChannelClosed) {
+            writeChannelClosed=true;
+            mProcess->closeWriteChannel();
+        }
         mProcess->waitForFinished(mWaitForFinishTime);
         if (mProcess->state()!=QProcess::Running) {
             break;
         }
+        if (errorOccurred)
+            break;
         if (mStop) {
             mProcess->terminate();
             if (mProcess->waitForFinished(1000)) {
@@ -198,10 +205,6 @@ void ExecutableRunner::run()
             }
             break;
         }
-        if (mProcess->bytesToWrite()==0 && redirectInput() && !writeChannelClosed) {
-            writeChannelClosed=true;
-            mProcess->closeWriteChannel();
-        }
 #if defined(Q_OS_WIN) || defined(Q_OS_LINUX)
         if (mStartConsole && !mPausing && pBuf) {
             if (strncmp(pBuf,"FINISHED",sizeof("FINISHED"))==0) {
@@ -229,8 +232,6 @@ void ExecutableRunner::run()
             }
         }
 #endif
-        if (errorOccurred)
-            break;
     }
 #ifdef Q_OS_WIN
     if (pBuf)
diff --git a/RedPandaIDE/compiler/filecompiler.cpp b/RedPandaIDE/compiler/filecompiler.cpp
index 4424ad0c..686d4666 100644
--- a/RedPandaIDE/compiler/filecompiler.cpp
+++ b/RedPandaIDE/compiler/filecompiler.cpp
@@ -54,7 +54,7 @@ bool FileCompiler::prepareForCompile()
         }
     }
 
-    mArguments += getCharsetArgument(mEncoding);
+    mArguments += getCharsetArgument(mEncoding, mOnlyCheckSyntax);
     QString strFileType;
     switch(fileType) {
     case FileType::CSource:
@@ -90,11 +90,6 @@ bool FileCompiler::prepareForCompile()
     return true;
 }
 
-QString FileCompiler::pipedText()
-{
-    return QString();
-}
-
 bool FileCompiler::prepareForRebuild()
 {
     QString exeName = getCompiledExecutableName(mFilename);
diff --git a/RedPandaIDE/compiler/filecompiler.h b/RedPandaIDE/compiler/filecompiler.h
index 847d6d01..bb78caf7 100644
--- a/RedPandaIDE/compiler/filecompiler.h
+++ b/RedPandaIDE/compiler/filecompiler.h
@@ -32,10 +32,6 @@ protected:
 private:
     QByteArray mEncoding;
 
-    // Compiler interface
-protected:
-    QString pipedText() override;
-
     // Compiler interface
 protected:
     bool prepareForRebuild() override;
diff --git a/RedPandaIDE/compiler/ojproblemcasesrunner.cpp b/RedPandaIDE/compiler/ojproblemcasesrunner.cpp
index 22618642..0347980e 100644
--- a/RedPandaIDE/compiler/ojproblemcasesrunner.cpp
+++ b/RedPandaIDE/compiler/ojproblemcasesrunner.cpp
@@ -92,10 +92,15 @@ void OJProblemCasesRunner::runCase(int index,POJProblemCase problemCase)
             process.write(readFileToByteArray(problemCase->inputFileName));
         else
             process.write(problemCase->input.toUtf8());
+        process.waitForFinished(0);
     }
 
     elapsedTimer.start();
     while (true) {
+        if (process.bytesToWrite()==0 && !writeChannelClosed) {
+            writeChannelClosed = true;
+            process.closeWriteChannel();
+        }
         process.waitForFinished(mWaitForFinishTime);
         if (process.state()!=QProcess::Running) {
             break;
@@ -113,10 +118,6 @@ void OJProblemCasesRunner::runCase(int index,POJProblemCase problemCase)
         }
         if (errorOccurred)
             break;
-        if (process.bytesToWrite()==0 && !writeChannelClosed) {
-            writeChannelClosed = true;
-            process.closeWriteChannel();
-        }
         readed = process.read(mBufferSize);
         buffer += readed;
         if (buffer.length()>=mBufferSize || noOutputTime > mOutputRefreshTime) {
diff --git a/RedPandaIDE/compiler/projectcompiler.cpp b/RedPandaIDE/compiler/projectcompiler.cpp
index d277d312..6c2cd069 100644
--- a/RedPandaIDE/compiler/projectcompiler.cpp
+++ b/RedPandaIDE/compiler/projectcompiler.cpp
@@ -461,11 +461,6 @@ void ProjectCompiler::setOnlyClean(bool newOnlyClean)
     mOnlyClean = newOnlyClean;
 }
 
-QString ProjectCompiler::pipedText()
-{
-    return QString();
-}
-
 bool ProjectCompiler::prepareForRebuild()
 {
     //we use make argument to clean
diff --git a/RedPandaIDE/compiler/projectcompiler.h b/RedPandaIDE/compiler/projectcompiler.h
index 53b7f923..a4f82236 100644
--- a/RedPandaIDE/compiler/projectcompiler.h
+++ b/RedPandaIDE/compiler/projectcompiler.h
@@ -48,7 +48,6 @@ private:
     bool mOnlyClean;
 protected:
     bool prepareForCompile() override;
-    QString pipedText() override;
     bool prepareForRebuild() override;
 };
 
diff --git a/RedPandaIDE/compiler/runner.cpp b/RedPandaIDE/compiler/runner.cpp
index 3771a923..bb1f8c42 100644
--- a/RedPandaIDE/compiler/runner.cpp
+++ b/RedPandaIDE/compiler/runner.cpp
@@ -24,7 +24,7 @@ Runner::Runner(const QString &filename, const QString &arguments, const QString
     mFilename(filename),
     mArguments(arguments),
     mWorkDir(workDir),
-    mWaitForFinishTime(1000)
+    mWaitForFinishTime(100)
 {
 
 }
diff --git a/RedPandaIDE/compiler/stdincompiler.cpp b/RedPandaIDE/compiler/stdincompiler.cpp
index dbc81d1b..2767933e 100644
--- a/RedPandaIDE/compiler/stdincompiler.cpp
+++ b/RedPandaIDE/compiler/stdincompiler.cpp
@@ -18,10 +18,11 @@
 #include "compilermanager.h"
 #include <QFile>
 #include <QFileInfo>
+#include <QTextCodec>
 #include "../platform.h"
 
 StdinCompiler::StdinCompiler(const QString &filename,const QByteArray& encoding, const QString& content,bool silent, bool onlyCheckSyntax):
-    Compiler(filename,silent,onlyCheckSyntax),
+    Compiler(filename,silent, onlyCheckSyntax),
     mContent(content),
     mEncoding(encoding)
 {
@@ -39,8 +40,9 @@ bool StdinCompiler::prepareForCompile()
     if (fileType == FileType::Other)
         fileType = FileType::CppSource;
     QString strFileType;
-    if (mEncoding!=ENCODING_ASCII  && (!mOnlyCheckSyntax || mEncoding != ENCODING_UTF8 ))
-        mArguments += getCharsetArgument(mEncoding);
+    if (mEncoding!=ENCODING_ASCII) {
+        mArguments += getCharsetArgument(mEncoding, mOnlyCheckSyntax);
+    }
     switch(fileType) {
     case FileType::CSource:
         mArguments += " -x c - ";
@@ -78,9 +80,17 @@ bool StdinCompiler::prepareForCompile()
     return true;
 }
 
-QString StdinCompiler::pipedText()
+QByteArray StdinCompiler::pipedText()
 {
-    return mContent;
+    if (mEncoding == ENCODING_ASCII)
+        return mContent.toLatin1();
+
+    QTextCodec* codec = QTextCodec::codecForName(mEncoding);
+    if (codec) {
+        return codec->fromUnicode(mContent);
+    } else {
+        return mContent.toLocal8Bit();
+    }
 }
 
 bool StdinCompiler::prepareForRebuild()
diff --git a/RedPandaIDE/compiler/stdincompiler.h b/RedPandaIDE/compiler/stdincompiler.h
index b43f3569..e27cf68f 100644
--- a/RedPandaIDE/compiler/stdincompiler.h
+++ b/RedPandaIDE/compiler/stdincompiler.h
@@ -35,7 +35,7 @@ private:
 
     // Compiler interface
 protected:
-    QString pipedText() override;
+    QByteArray pipedText() override;
 
     // Compiler interface
 protected:
diff --git a/RedPandaIDE/debugger.cpp b/RedPandaIDE/debugger.cpp
index a342185b..99a81f6f 100644
--- a/RedPandaIDE/debugger.cpp
+++ b/RedPandaIDE/debugger.cpp
@@ -1415,9 +1415,6 @@ void DebugReader::run()
             break;
         }
         if (mStop) {
-            mProcess->closeReadChannel(QProcess::StandardOutput);
-            mProcess->closeReadChannel(QProcess::StandardError);
-            mProcess->closeWriteChannel();
             mProcess->terminate();
             mProcess->kill();
             break;
@@ -2401,17 +2398,19 @@ void DebugTarget::run()
     mStartSemaphore.release(1);
     if (mProcess->state()==QProcess::Running && !mInputFile.isEmpty()) {
         mProcess->write(readFileToByteArray(mInputFile));
-        mProcess->closeWriteChannel();
+        mProcess->waitForFinished(0);
     }
+    bool writeChannelClosed = false;
     while (true) {
+        if (mProcess->bytesToWrite()==0 && !writeChannelClosed) {
+            writeChannelClosed = true;
+            mProcess->closeWriteChannel();
+        }
         mProcess->waitForFinished(1);
         if (mProcess->state()!=QProcess::Running) {
             break;
         }
         if (mStop) {
-            mProcess->closeReadChannel(QProcess::StandardOutput);
-            mProcess->closeReadChannel(QProcess::StandardError);
-            mProcess->closeWriteChannel();
             mProcess->terminate();
             mProcess->kill();
             break;