Ticket 7792: Suppression both exit_code and syntaxError when call cppcheck suppressions (#1345)

lib/cppcheck.cpp

@@ -54,7 +54,7 @@ static TimerResults S_timerResults;
 static const CWE CWE398(398U);  // Indicator of Poor Code Quality
 
 CppCheck::CppCheck(ErrorLogger &errorLogger, bool useGlobalSuppressions)
-    : mErrorLogger(errorLogger), mExitCode(0), mUseGlobalSuppressions(useGlobalSuppressions), mTooManyConfigs(false), mSimplify(true)
+    : mErrorLogger(errorLogger), mExitCode(0), mSuppressInternalErrorFound(false), mUseGlobalSuppressions(useGlobalSuppressions), mTooManyConfigs(false), mSimplify(true)
 {
 }
 
@@ -108,6 +108,7 @@ unsigned int CppCheck::check(const ImportProject::FileSettings &fs)
 unsigned int CppCheck::checkFile(const std::string& filename, const std::string &cfgname, std::istream& fileStream)
 {
     mExitCode = 0;
+    mSuppressInternalErrorFound = false;
 
     // only show debug warnings for accepted C/C++ source files
     if (!Path::acceptFile(filename))
@@ -450,6 +451,10 @@ unsigned int CppCheck::checkFile(const std::string& filename, const std::string
                                                  false);
 
                 reportErr(errmsg);
+                if(mSuppressInternalErrorFound){
+                    internalErrorFound = false;
+                    continue;
+                }
             }
         }
 
@@ -499,6 +504,7 @@ unsigned int CppCheck::checkFile(const std::string& filename, const std::string
     if (internalErrorFound && (mExitCode==0)) {
         mExitCode = 1;
     }
+
     return mExitCode;
 }
 
@@ -749,6 +755,8 @@ void CppCheck::purgedConfigurationMessage(const std::string &file, const std::st
 
 void CppCheck::reportErr(const ErrorLogger::ErrorMessage &msg)
 {
+    mSuppressInternalErrorFound = false;
+
     if (!mSettings.library.reportErrors(msg.file0))
         return;
 
@@ -763,11 +771,15 @@ void CppCheck::reportErr(const ErrorLogger::ErrorMessage &msg)
     const Suppressions::ErrorMessage errorMessage = msg.toSuppressionsErrorMessage();
 
     if (mUseGlobalSuppressions) {
-        if (mSettings.nomsg.isSuppressed(errorMessage))
+        if (mSettings.nomsg.isSuppressed(errorMessage)) {
+            mSuppressInternalErrorFound = true;
             return;
+        }
     } else {
-        if (mSettings.nomsg.isSuppressedLocal(errorMessage))
+        if (mSettings.nomsg.isSuppressedLocal(errorMessage)) {
+            mSuppressInternalErrorFound = true;
             return;
+        }
     }
 
     if (!mSettings.nofail.isSuppressed(errorMessage) && (mUseGlobalSuppressions || !mSettings.nomsg.isSuppressed(errorMessage)))

lib/cppcheck.h

@@ -215,6 +215,8 @@ private:
 
     unsigned int mExitCode;
 
+    bool mSuppressInternalErrorFound;
+
     bool mUseGlobalSuppressions;
 
     /** Are there too many configs? */

test/testsuppressions.cpp

@@ -64,6 +64,8 @@ private:
         TEST_CASE(unusedFunction);
 
         TEST_CASE(matchglob);
+
+        TEST_CASE(suppressingSyntaxErrorAndExitCode);
     }
 
     void suppressionsBadId1() const {
@@ -583,6 +585,38 @@ private:
         ASSERT_EQUALS(true, Suppressions::matchglob("?y?", "xyz"));
         ASSERT_EQUALS(true, Suppressions::matchglob("?/?/?", "x/y/z"));
     }
+
+    void suppressingSyntaxErrorAndExitCode() {
+        std::map<std::string, std::string> files;
+        files["test.cpp"] = "fi if;";
+
+        ASSERT_EQUALS(0, checkSuppression(files, "*:test.cpp"));
+        ASSERT_EQUALS("", errout.str());
+
+        // multi files, but only suppression one
+        std::map<std::string, std::string> mfiles;
+        mfiles["test.cpp"] = "fi if;";
+        mfiles["test2.cpp"] = "fi if";
+        ASSERT_EQUALS(1, checkSuppression(mfiles, "*:test.cpp"));
+        ASSERT_EQUALS("[test2.cpp:1]: (error) syntax error\n", errout.str());
+
+        // multi error in file, but only suppression one error
+        std::map<std::string, std::string> file2;
+        file2["test.cpp"] = "fi fi\n"
+                            "if if;";
+        ASSERT_EQUALS(1, checkSuppression(file2, "*:test.cpp:1"));  // suppress all error at line 1 of test.cpp
+        ASSERT_EQUALS("[test.cpp:2]: (error) syntax error\n", errout.str());
+
+        // multi error in file, but only suppression one error (2)
+        std::map<std::string, std::string> file3;
+        file3["test.cpp"] = "void f(int x, int y){\n"
+                            "    int a = x/0;\n"
+                            "    int b = y/0;\n"
+                            "}\n"
+                            "f(0, 1);\n";
+        ASSERT_EQUALS(1, checkSuppression(file3, "zerodiv:test.cpp:3"));  // suppress 'errordiv' at line 3 of test.cpp
+   }
+
 };
 
 REGISTER_TEST(TestSuppressions)