Fix crash on Windows with -j option

.github/workflows/CI-cygwin.yml

@@ -16,6 +16,10 @@ jobs:
       matrix:
         os: [windows-2019]
         arch: [x64, x86]
+        include:
+          - platform: 'x86_64'
+            packages: |
+              gcc-g++
       fail-fast: false
 
     runs-on: ${{ matrix.os }}
@@ -24,26 +28,27 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Set up Cygwin
-        uses: egor-tensin/setup-cygwin@v3
+        uses: cygwin/cygwin-install-action@master
         with:
           platform: ${{ matrix.arch }}
+          packages: ${{ matrix.packages }}
 
       - name: Build cppcheck
         run: |
-          C:\tools\cygwin\bin\bash.exe -l -c cd %GITHUB_WORKSPACE% && make -j2
+          C:\cygwin\bin\bash.exe -l -c cd %GITHUB_WORKSPACE% && make -j2
 
       - name: Build test
         run: |
-          C:\tools\cygwin\bin\bash.exe -l -c cd %GITHUB_WORKSPACE% && make -j2 testrunner
+          C:\cygwin\bin\bash.exe -l -c cd %GITHUB_WORKSPACE% && make -j2 testrunner
 
       - name: Run test
         run: |
-          C:\tools\cygwin\bin\bash.exe -l -c cd %GITHUB_WORKSPACE% && make -j2 check
+          C:\cygwin\bin\bash.exe -l -c cd %GITHUB_WORKSPACE% && make -j2 check
 
       - name: Extra test for misra
         run: |
-          C:\tools\cygwin\bin\bash.exe -l -c cd %GITHUB_WORKSPACE%\addons\test
-          ..\..\cppcheck --dump -DDUMMY --suppress=uninitvar --inline-suppr misra\misra-test.c --std=c89 --platform=unix64 && python3 ..\misra.py -verify misra\misra-test.c.dump
-          C:\tools\cygwin\bin\bash.exe -l -c cd %GITHUB_WORKSPACE%
-          .\cppcheck --addon=misra --inline-suppr --enable=information --error-exitcode=1 addons\test\misra\misra-ctu-*-test.c
+          cd %GITHUB_WORKSPACE%\addons\test
+          ..\..\cppcheck.exe --dump -DDUMMY --suppress=uninitvar --inline-suppr misra\misra-test.c --std=c89 --platform=unix64
+          python3 ..\misra.py -verify misra\misra-test.c.dump
+          ..\..\cppcheck.exe --addon=misra --inline-suppr --enable=information --error-exitcode=1 misra\misra-ctu-1-test.c misra\misra-ctu-2-test.c
 

Makefile

@@ -102,7 +102,7 @@ ifndef CXXFLAGS
 endif
 
 ifeq (g++, $(findstring g++,$(CXX)))
-    override CXXFLAGS += -std=c++0x
+    override CXXFLAGS += -std=gnu++0x
 else ifeq (clang++, $(findstring clang++,$(CXX)))
     override CXXFLAGS += -std=c++0x
 else ifeq ($(CXX), c++)

cli/processexecutor.cpp

@@ -18,7 +18,7 @@
 
 #include "processexecutor.h"
 
-#if !defined(WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
+#if !defined(WIN32) && !defined(__MINGW32__)
 
 #include "color.h"
 #include "config.h"

lib/config.h

@@ -110,7 +110,7 @@ static const std::string emptyString;
 #elif defined(USE_THREADS)
 #define THREADING_MODEL_THREAD
 #define STDCALL
-#elif ((defined(__GNUC__) || defined(__sun)) && !defined(__MINGW32__) && !defined(__CYGWIN__)) || defined(__CPPCHECK__)
+#elif ((defined(__GNUC__) || defined(__sun)) && !defined(__MINGW32__)) || defined(__CPPCHECK__)
 #define THREADING_MODEL_FORK
 #define STDCALL
 #else

lib/programmemory.cpp

@@ -847,8 +847,8 @@ ValueFlow::Value evaluateLibraryFunction(const std::unordered_map<nonneg int, Va
                                          const std::string& returnValue,
                                          const Settings* settings)
 {
-    static std::unordered_map<std::string,
-                              std::function<ValueFlow::Value(const std::unordered_map<nonneg int, ValueFlow::Value>& arg)>>
+    thread_local static std::unordered_map<std::string,
+                                           std::function<ValueFlow::Value(const std::unordered_map<nonneg int, ValueFlow::Value>& arg)>>
     functions = {};
     if (functions.count(returnValue) == 0) {
 

tools/dmake.cpp

@@ -374,7 +374,7 @@ int main(int argc, char **argv)
     }
 
     fout << "ifeq (g++, $(findstring g++,$(CXX)))\n"
-         << "    override CXXFLAGS += -std=c++0x\n"
+         << "    override CXXFLAGS += -std=gnu++0x\n"
          << "else ifeq (clang++, $(findstring clang++,$(CXX)))\n"
          << "    override CXXFLAGS += -std=c++0x\n"
          << "else ifeq ($(CXX), c++)\n"