added CLI options to control whole program analysis

Author: firewave

cli/cmdlineparser.cpp

@@ -1027,6 +1027,9 @@ CmdLineParser::Result CmdLineParser::parseFromArgs(int argc, const char* const a
         else if (std::strcmp(argv[i], "--no-safety") == 0)
             mSettings.safety = false;
 
+        else if (std::strcmp(argv[i], "--no-whole-program") == 0)
+            mSettings.wholeProgram = false;
+
         // Write results in file
         else if (std::strncmp(argv[i], "--output-file=", 14) == 0)
             mSettings.outputFile = Path::simplifyPath(argv[i] + 14);
@@ -1566,6 +1569,9 @@ CmdLineParser::Result CmdLineParser::parseFromArgs(int argc, const char* const a
         else if (std::strcmp(argv[i], "-v") == 0 || std::strcmp(argv[i], "--verbose") == 0)
             mSettings.verbose = true;
 
+        else if (std::strcmp(argv[i], "--whole-program") == 0)
+            mSettings.wholeProgram = true;
+
         // Write results in results.xml
         else if (std::strcmp(argv[i], "--xml") == 0) {
             if (outputFormatOptionProvided) {
@@ -1633,12 +1639,15 @@ CmdLineParser::Result CmdLineParser::parseFromArgs(int argc, const char* const a
         // TODO: bail out instead?
         if (mSettings.checks.isEnabled(Checks::unusedFunction))
         {
-            mLogger.printMessage("unusedFunction check requires --cppcheck-build-dir to be active with -j.");
+            mLogger.printMessage("disabling unusedFunction check as it requires --cppcheck-build-dir to be active with -j");
             mSettings.checks.disable(Checks::unusedFunction);
             // TODO: is there some later logic to remove?
         }
-        // TODO: enable
-        //mLogger.printMessage("whole program analysis requires --cppcheck-build-dir to be active with -j.");
+        // TODO: bail out instead?
+        if (mSettings.wholeProgram) {
+            mLogger.printMessage("disabling whole program analysis as it requires --cppcheck-build-dir to be active with -j.");
+            mSettings.wholeProgram = false;
+        }
     }
 
     if (!mSettings.checks.isEnabled(Checks::unusedFunction))

lib/cppcheck.cpp

@@ -1820,7 +1820,7 @@ bool CppCheck::analyseWholeProgram()
     if (!Settings::unusedFunctionOnly()) {
         // Analyse the tokens
         CTU::FileInfo ctu;
-        if (mSettings.useSingleJob() || !mSettings.buildDir.empty())
+        if (mSettings.wholeProgram)
         {
             for (const Check::FileInfo *fi : mFileInfo) {
                 const auto *fi2 = dynamic_cast<const CTU::FileInfo *>(fi);
@@ -1843,6 +1843,10 @@ bool CppCheck::analyseWholeProgram()
 
 unsigned int CppCheck::analyseWholeProgram(const std::string &buildDir, const std::list<FileWithDetails> &files, const std::list<FileSettings>& fileSettings, const std::string& ctuInfo)
 {
+    // TODO: is this bailout correct? what happened when builddir was empty?
+    if (!mSettings.wholeProgram)
+        return mLogger->exitcode();
+
     if (mSettings.checks.isEnabled(Checks::unusedFunction))
         CheckUnusedFunctions::analyseWholeProgram(mSettings, mErrorLogger, buildDir);
 

lib/settings.h

@@ -525,6 +525,9 @@ class CPPCHECKLIB WARN_UNUSED Settings {
     /** @brief Is --verbose given? */
     bool verbose{};
 
+    /** @brief Is the whole program analysis enabled? */
+    bool wholeProgram{true};
+
     /** @brief XML version (--xml-version=..) */
     int xml_version = 2; // TODO: integrate into outputFormat enum?
 

test/cli/other_test.py

@@ -143,7 +143,7 @@ def test_message_j(tmpdir):
     with open(test_file, 'wt') as f:
         f.write("")
 
-    args = ['-j2', test_file]
+    args = ['-j2', '--no-whole-program', test_file]
 
     _, stdout, _ = cppcheck(args)
     assert stdout == "Checking {} ...\n".format(test_file) # we were adding stray \0 characters at the end
@@ -251,7 +251,15 @@ def test_progress_j(tmpdir):
                 }
                 """)
 
-    args = ['--report-progress=0', '--enable=all', '--inconclusive', '-j2', '--disable=unusedFunction', test_file]
+    args = [
+        '--report-progress=0',
+        '--enable=all',
+        '--inconclusive',
+        '-j2',
+        '--disable=unusedFunction',
+        '--no-whole-program',
+        test_file
+    ]
 
     exitcode, stdout, stderr = cppcheck(args)
     assert exitcode == 0, stdout if stdout else stderr
@@ -1303,7 +1311,7 @@ def test_markup_j(tmpdir):
     with open(test_file_4, 'wt'):
         pass
 
-    args = ['--library=qt', '-j2', test_file_1, test_file_2, test_file_3, test_file_4]
+    args = ['--library=qt', '-j2', '--no-whole-program', test_file_1, test_file_2, test_file_3, test_file_4]
 
     exitcode, stdout, stderr = cppcheck(args)
     assert exitcode == 0, stdout if stdout else stderr
@@ -2539,7 +2547,7 @@ def test_inline_suppr(tmp_path):
 
 
 def test_inline_suppr_j(tmp_path):
-    __test_inline_suppr(tmp_path, ['-j2'])
+    __test_inline_suppr(tmp_path, ['-j2', '--no-whole-program'])
 
 
 def test_inline_suppr_builddir(tmp_path):
@@ -2768,7 +2776,7 @@ def test_addon_suppr_inline(tmp_path):
 
 # TODO: remove override when all issues are fixed
 def test_addon_suppr_inline_j(tmp_path):
-    __test_addon_suppr(tmp_path, ['--inline-suppr', '-j2'])
+    __test_addon_suppr(tmp_path, ['--inline-suppr', '-j2', '--no-whole-program'])
 
 
 def test_addon_suppr_cli_line(tmp_path):
@@ -4648,6 +4656,7 @@ def test_ipc(tmp_path):
         '-j2',
         '--executor=process',
         '--no-cppcheck-build-dir',
+        '--no-whole-program',
         str(test_file)
     ]
 
@@ -4680,6 +4689,7 @@ def test_ipc_suppressions(tmp_path):
         '-j2',
         '--executor=process',
         '--no-cppcheck-build-dir',
+        '--no-whole-program',
         '--suppress=id0:test1.c',
         str(tmp_path)
     ]
@@ -4724,6 +4734,7 @@ def test_ipc_inline_suppressions(tmp_path):
         '-j2',
         '--executor=process',
         '--no-cppcheck-build-dir',
+        '--no-whole-program',
         '--inline-suppr',
         str(tmp_path)
     ]

test/testcmdlineparser.cpp

@@ -499,6 +499,8 @@ class TestCmdlineParser : public TestFixture {
         TEST_CASE(noSafetyOverride);
         TEST_CASE(debugAnalyzerinfo);
         TEST_CASE(debugIpc);
+        TEST_CASE(wholeProgram);
+        TEST_CASE(noWholeProgram);
 
         TEST_CASE(ignorepaths1);
         TEST_CASE(ignorepaths2);
@@ -3495,6 +3497,20 @@ class TestCmdlineParser : public TestFixture {
         ASSERT_EQUALS(true, settings->debugipc);
     }
 
+    void wholeProgram() {
+        REDIRECT;
+        const char * const argv[] = {"cppcheck", "--whole-program", "file.cpp"};
+        ASSERT_EQUALS_ENUM(CmdLineParser::Result::Success, parseFromArgs(argv));
+        ASSERT_EQUALS(true, settings->wholeProgram);
+    }
+
+    void noWholeProgram() {
+        REDIRECT;
+        const char * const argv[] = {"cppcheck", "--no-whole-program", "file.cpp"};
+        ASSERT_EQUALS_ENUM(CmdLineParser::Result::Success, parseFromArgs(argv));
+        ASSERT_EQUALS(false, settings->wholeProgram);
+    }
+
     void ignorepaths1() {
         REDIRECT;
         const char * const argv[] = {"cppcheck", "-isrc", "file.cpp"};