Tests: Fix clang -Wstrict-prototypes warnings

Tests/Architecture/bar.c

@@ -1,5 +1,5 @@
 extern int foo(void);
-int main()
+int main(void)
 {
   return foo();
 }

Tests/BuildDepends/Project/link_depends_no_shared_exe.c

@@ -3,7 +3,7 @@
 __declspec(dllimport)
 #endif
   int link_depends_no_shared_lib(void);
-int main()
+int main(void)
 {
   return link_depends_no_shared_lib() + link_depends_no_shared_exe_value;
 }

Tests/CMakeCommands/target_compile_definitions/consumer.c

@@ -39,6 +39,6 @@
 #  error Expected LANG_IS_C_OR_CXX
 #endif
 
-void consumer_c()
+void consumer_c(void)
 {
 }

Tests/CMakeCommands/target_compile_features/main.c

@@ -6,7 +6,7 @@ int foo(int* restrict a, int* restrict b)
   return 0;
 }
 
-int main()
+int main(void)
 {
   return 0;
 }

Tests/CMakeCommands/target_compile_features/restrict_user.c

@@ -8,7 +8,7 @@ int bar(int* restrict a, int* restrict b)
   return foo(a, b);
 }
 
-int main()
+int main(void)
 {
   return 0;
 }

Tests/CMakeCommands/target_compile_options/consumer.c

@@ -35,6 +35,6 @@
 #  endif
 #endif
 
-void consumer_c()
+void consumer_c(void)
 {
 }

Tests/CMakeCommands/target_include_directories/consumer.c

@@ -15,7 +15,7 @@
 #  endif
 #endif
 
-int consumer_c()
+int consumer_c(void)
 {
   return 0;
 }

Tests/CMakeLib/PseudoMemcheck/NoLog/CMakeLists.txt

@@ -1,7 +1,7 @@
 # A dummy checker implementation that does not write the requested output file
 # so it triggers an error for every checker.
 
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/ret0.c.in" "int main(){return 0;}\n")
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/ret0.c.in" "int main(void){return 0;}\n")
 
 configure_file(
   "${CMAKE_CURRENT_BINARY_DIR}/ret0.c.in"

Tests/COnly/conly.c

@@ -4,7 +4,7 @@
 #include "libc1.h"
 #include "libc2.h"
 
-int main()
+int main(void)
 {
   int class = 0;
   if (LibC1Func() != 2.0) {

Tests/COnly/libc1.c

@@ -1,4 +1,4 @@
-float LibC1Func()
+float LibC1Func(void)
 {
   return 2.0;
 }

Tests/COnly/libc2.c

@@ -1,6 +1,6 @@
 #include "libc2.h"
 
-float LibC2Func()
+float LibC2Func(void)
 {
   return 1.0;
 }

Tests/CPackInnoSetupGenerator/main.c

@@ -1,6 +1,6 @@
 #include <stdio.h>
 
-int main()
+int main(void)
 {
   printf("Hello, World!\n");
   return 42;

Tests/CTestTestVerboseOutput/nop.c

@@ -1,4 +1,4 @@
-int main()
+int main(void)
 {
   return 0;
 }

Tests/CommandLength/test.c

@@ -1,4 +1,4 @@
-int main()
+int main(void)
 {
   return 0;
 }

Tests/CompileDefinitions/runtest.c

@@ -6,7 +6,7 @@
 #  error "BUILD_CONFIG_NAME not defined!"
 #endif
 
-int main()
+int main(void)
 {
   char build_config_name[] = BUILD_CONFIG_NAME;
   char* c;

Tests/CompileFeatures/c_variadic_macros.c

@@ -9,7 +9,7 @@ int someFunc(int i1, char c, int i2)
 
 #define FUNC_WRAPPER(...) someFunc(__VA_ARGS__)
 
-void otherFunc()
+void otherFunc(void)
 {
   FUNC_WRAPPER(42, 'a', 7);
 }

Tests/CompileFeatures/default_dialect.c

@@ -26,7 +26,7 @@
 #  endif
 #endif
 
-int main()
+int main(void)
 {
   return 0;
 }

Tests/CompileFeatures/genex_test.c

@@ -38,6 +38,6 @@
 #  endif
 #endif
 
-int main()
+int main(void)
 {
 }

Tests/Complex/Executable/Sub1/NameConflictTest.c

@@ -1,4 +1,4 @@
-int NameConflictTest1()
+int NameConflictTest1(void)
 {
   return 0;
 }

Tests/Complex/Executable/Sub2/NameConflictTest.c

@@ -1,4 +1,4 @@
-int NameConflictTest2()
+int NameConflictTest2(void)
 {
   return 0;
 }

Tests/Complex/Library/TestLink.c

@@ -1,4 +1,4 @@
-int TestLinkGetType()
+int TestLinkGetType(void)
 {
 #ifdef CMakeTestLinkShared_EXPORTS
   return 0;

Tests/Complex/Library/testConly.c

@@ -2,7 +2,7 @@
 
 #include <stdio.h>
 
-int CsharedFunction()
+int CsharedFunction(void)
 {
 #ifndef TEST_C_FLAGS
   printf("TEST_C_FLAGS failed\n");

Tests/ComplexOneConfig/Executable/Sub1/NameConflictTest.c

@@ -1,4 +1,4 @@
-int NameConflictTest1()
+int NameConflictTest1(void)
 {
   return 0;
 }

Tests/ComplexOneConfig/Executable/Sub2/NameConflictTest.c

@@ -1,4 +1,4 @@
-int NameConflictTest2()
+int NameConflictTest2(void)
 {
   return 0;
 }

Tests/ComplexOneConfig/Library/TestLink.c

@@ -1,4 +1,4 @@
-int TestLinkGetType()
+int TestLinkGetType(void)
 {
 #ifdef CMakeTestLinkShared_EXPORTS
   return 0;

Tests/ComplexOneConfig/Library/testConly.c

@@ -2,7 +2,7 @@
 
 #include <stdio.h>
 
-int CsharedFunction()
+int CsharedFunction(void)
 {
 #ifndef TEST_C_FLAGS
   printf("TEST_C_FLAGS failed\n");

Tests/Cuda/WithC/main.c

@@ -4,7 +4,7 @@ extern int use_cuda(void);
 #  include <windows.h>
 #endif
 
-int main()
+int main(void)
 {
 #ifdef _WIN32
   /* Use an API that requires CMake's "standard" C libraries.  */

Tests/CustomCommand/gen_redirect_in.c

@@ -1,6 +1,6 @@
 #if 1
 
-int gen_redirect()
+int gen_redirect(void)
 {
   return 3;
 }

Tests/CustomCommandWorkingDirectory/customTarget.c

@@ -1,4 +1,4 @@
-int customTarget()
+int customTarget(void)
 {
   return 0;
 }

Tests/Dependency/1/OneSrc.c

@@ -1,3 +1,3 @@
-void OneFunction()
+void OneFunction(void)
 {
 }

Tests/Dependency/Case1/a.c

@@ -1,4 +1,4 @@
-int a()
+int a(void)
 {
   return 5;
 }

Tests/Dependency/Case1/b.c

@@ -1,6 +1,6 @@
-extern int a();
+extern int a(void);
 
-int b()
+int b(void)
 {
   return a() + 17;
 }

Tests/Dependency/Case1/b2.c

@@ -1,4 +1,4 @@
-int b2()
+int b2(void)
 {
   return 3;
 }

Tests/Dependency/Case1/c.c

@@ -1,6 +1,6 @@
-extern int b();
+extern int b(void);
 
-int c()
+int c(void)
 {
   return b() + 42;
 }

Tests/Dependency/Case1/c2.c

@@ -1,6 +1,6 @@
-extern int b2();
+extern int b2(void);
 
-int c2()
+int c2(void)
 {
   return b2() + 1;
 }

Tests/Dependency/Case1/d.c

@@ -1,6 +1,6 @@
-extern int c2();
+extern int c2(void);
 
-int d()
+int d(void)
 {
   return c2() + 2;
 }

Tests/Dependency/Case1/main.c

@@ -2,7 +2,7 @@ extern int b();
 extern int c();
 extern int d();
 
-int main()
+int main(void)
 {
   c();
   b();

Tests/Dependency/Case4/bar.c

@@ -1,5 +1,5 @@
-extern int foo();
-int main()
+extern int foo(void);
+int main(void)
 {
   return foo();
 }

Tests/Dependency/Case4/foo.c

@@ -1,4 +1,4 @@
-int foo()
+int foo(void)
 {
   return 0;
 }

Tests/Dependency/Eight/EightSrc.c

@@ -1,6 +1,6 @@
-void SevenFunction();
+void SevenFunction(void);
 
-void EightFunction()
+void EightFunction(void)
 {
   SevenFunction();
 }

Tests/Dependency/Exec/ExecMain.c

@@ -5,7 +5,7 @@ void NoDepCFunction();
 void SixAFunction();
 void SixBFunction();
 
-int main()
+int main(void)
 {
   SixAFunction();
   SixBFunction();

Tests/Dependency/Exec2/ExecMain.c

@@ -3,7 +3,7 @@
 void FiveFunction();
 void EightFunction();
 
-int main()
+int main(void)
 {
   FiveFunction();
   EightFunction();

Tests/Dependency/Exec3/ExecMain.c

@@ -3,7 +3,7 @@
 void FiveFunction();
 void EightFunction();
 
-int main()
+int main(void)
 {
   FiveFunction();
   EightFunction();

Tests/Dependency/Exec4/ExecMain.c

@@ -3,7 +3,7 @@
 void FiveFunction();
 void TwoFunction();
 
-int main()
+int main(void)
 {
   FiveFunction();
   TwoFunction();

Tests/Dependency/Five/FiveSrc.c

@@ -1,6 +1,6 @@
-void TwoFunction();
+void TwoFunction(void);
 
-void FiveFunction()
+void FiveFunction(void)
 {
   TwoFunction();
 }

Tests/Dependency/Four/FourSrc.c

@@ -1,9 +1,9 @@
 #include <two-test.h> /* Requires TwoCustom to be built first.  */
-void NoDepAFunction();
-void OneFunction();
-void TwoFunction();
+void NoDepAFunction(void);
+void OneFunction(void);
+void TwoFunction(void);
 
-void FourFunction()
+void FourFunction(void)
 {
   static int count = 0;
   if (count == 0) {

Tests/Dependency/NoDepA/NoDepASrc.c

@@ -1,3 +1,3 @@
-void NoDepAFunction()
+void NoDepAFunction(void)
 {
 }

Tests/Dependency/NoDepB/NoDepBSrc.c

@@ -1,6 +1,6 @@
-void NoDepAFunction();
+void NoDepAFunction(void);
 
-void NoDepBFunction()
+void NoDepBFunction(void)
 {
   NoDepAFunction();
 }

Tests/Dependency/NoDepC/NoDepCSrc.c

@@ -1,6 +1,6 @@
-void NoDepAFunction();
+void NoDepAFunction(void);
 
-void NoDepCFunction()
+void NoDepCFunction(void)
 {
   NoDepAFunction();
 }

Tests/Dependency/Seven/SevenSrc.c

@@ -1,6 +1,6 @@
-void TwoFunction();
+void TwoFunction(void);
 
-void SevenFunction()
+void SevenFunction(void)
 {
   TwoFunction();
 }

Tests/Dependency/Six/SixASrc.c

@@ -1,7 +1,7 @@
-void FiveFunction();
-void TwoFunction();
+void FiveFunction(void);
+void TwoFunction(void);
 
-void SixAFunction()
+void SixAFunction(void)
 {
   FiveFunction();
   TwoFunction();

Tests/Dependency/Six/SixBSrc.c

@@ -1,8 +1,8 @@
-void TwoFunction();
-void FiveFunction();
-void FourFunction();
+void TwoFunction(void);
+void FiveFunction(void);
+void FourFunction(void);
 
-void SixBFunction()
+void SixBFunction(void)
 {
   TwoFunction();
   FiveFunction();

Tests/Dependency/Three/ThreeSrc.c

@@ -1,7 +1,7 @@
-void OneFunction();
-void FourFunction();
+void OneFunction(void);
+void FourFunction(void);
 
-void ThreeFunction()
+void ThreeFunction(void)
 {
   static int count = 0;
   if (count == 0) {

Tests/Dependency/Two/TwoCustomSrc.c

@@ -1,10 +1,10 @@
-extern void NoFunction();
+extern void NoFunction(void);
 
 /* Provide a function that is supposed to be found in the Three
    library.  If Two links to TwoCustom then TwoCustom will come before
    Three and this symbol will be used.  Since NoFunction is not
    defined, that will cause a link failure.  */
-void ThreeFunction()
+void ThreeFunction(void)
 {
   NoFunction();
 }

Tests/Dependency/Two/TwoSrc.c

@@ -1,6 +1,6 @@
 #include <two-test.h>
 
-void TwoFunction()
+void TwoFunction(void)
 {
   static int count = 0;
   if (count == 0) {

Tests/DoubleProject/silly.c

@@ -1,4 +1,4 @@
-int main()
+int main(void)
 {
   return 0;
 }

Tests/ExportImport/Export/testExe2.c

@@ -9,7 +9,7 @@ testExe2_EXPORT int testExe2Func(void)
   return 123;
 }
 
-int main()
+int main(void)
 {
   return 0;
 }

Tests/ExportImport/Import/A/deps_iface.c

@@ -26,7 +26,7 @@
 
 extern int testLibDepends(void);
 
-int main()
+int main(void)
 {
   return testLibDepends();
 }

Tests/ExportImport/Import/A/imp_mod1.c

@@ -7,7 +7,7 @@
 testExe2_IMPORT int testExe2Func(void);
 testExe2_IMPORT int testExe2lib(void);
 
-int imp_mod1()
+int imp_mod1(void)
 {
   return testExe2Func() + testExe2lib();
 }

Tests/ExportImport/Import/A/imp_testExe1.c

@@ -21,7 +21,7 @@ extern int testStaticLibPlugin(void);
 #endif
 extern int testLib4libcfg(void);
 
-int main()
+int main(void)
 {
   return (testLib2() + generated_by_testExe1() + testLib3() + testLib4() +
           testLib5() + testLib6() + testLib7() + testLibCycleA1() +

Tests/ExportImport/Import/A/imp_testExeAbs1.c

@@ -7,7 +7,7 @@
 #ifndef testLibAbs1b
 #  error "testLibAbs1b not defined"
 #endif
-int main()
+int main(void)
 {
   return 0 + testLibAbs1();
 }

Tests/ExportImport/Import/A/imp_testLib8.c

@@ -2,7 +2,7 @@
 int testLib8A(void);
 int testLib8B(void);
 
-int main()
+int main(void)
 {
   return (testLib8A() + testLib8B());
 }

Tests/ExportImport/Import/A/imp_testLib9.c

@@ -10,7 +10,7 @@
 
 int testLib9(void);
 
-int main()
+int main(void)
 {
   return testLib9();
 }

Tests/ExportImport/Import/imp_testTransExe1.c

@@ -1,6 +1,6 @@
 extern int imp_lib1(void);
 
-int main()
+int main(void)
 {
   return imp_lib1();
 }

Tests/ExportImport/main.c

@@ -1,4 +1,4 @@
-int main()
+int main(void)
 {
   return 0;
 }

Tests/FindALSA/Test/main.c

@@ -2,7 +2,7 @@
 #include <stdio.h>
 #include <string.h>
 
-int main()
+int main(void)
 {
   printf("Found ALSA version %s, expected version %s\n",
          snd_asoundlib_version(), CMAKE_EXPECTED_ALSA_VERSION);

Tests/FindBLAS/Test/main.c

@@ -13,7 +13,7 @@ typedef int64_t blas_int;
 // declare what parts of the blas C-API we need
 void dswap_(blas_int* N, double* X, blas_int* incX, double* Y, blas_int* incY);
 
-int main()
+int main(void)
 {
   double x[4] = { 1, 2, 3, 4 };
   double y[4] = { 8, 7, 7, 6 };

Tests/FindBZip2/Test/main.c

@@ -2,7 +2,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-int main()
+int main(void)
 {
   int chunksize = 1024;
   FILE* file = fopen("test.bzip2", "wb");

Tests/FindCURL/Test/main.c

@@ -2,7 +2,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-int main()
+int main(void)
 {
   struct curl_slist* slist;
 

Tests/FindCups/Test/main.c

@@ -1,6 +1,6 @@
 #include <cups/cups.h>
 
-int main()
+int main(void)
 {
   int num_options = 0;
   cups_option_t* options = NULL;

Tests/FindDevIL/Test/main.c

@@ -1,6 +1,6 @@
 #include <IL/il.h>
 
-int main()
+int main(void)
 {
   // Test 1 requires to link to the library.
   ilInit();

Tests/FindDevIL/Test/main_ilu.c

@@ -1,6 +1,6 @@
 #include <IL/ilu.h>
 
-int main()
+int main(void)
 {
   // IL Utilities requires only initialization.
   // Unlike main DevIL there are no shutdown function.

Tests/FindEXPAT/Test/main.c

@@ -3,7 +3,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-int main()
+int main(void)
 {
   XML_Expat_Version expat_version;
   char expat_version_string[16];

Tests/FindFontconfig/Test/main.c

@@ -3,7 +3,7 @@
 #include <stdio.h>
 #include <string.h>
 
-int main()
+int main(void)
 {
   FcInit();
   printf("Found Fontconfig.\n");

Tests/FindFreetype/Test/main.c

@@ -3,7 +3,7 @@
 #include FT_FREETYPE_H
 #include <string.h>
 
-int main()
+int main(void)
 {
   FT_Library library;
   FT_Error error;

Tests/FindGDAL/Test/main.c

@@ -2,7 +2,7 @@
 #include <stdio.h>
 #include <string.h>
 
-int main()
+int main(void)
 {
   printf("Found GDAL version %s, expected version %s\n", GDAL_RELEASE_NAME,
          CMAKE_EXPECTED_GDAL_VERSION);

Tests/FindGIF/Test/main.c

@@ -8,7 +8,7 @@
 #  define GIFLIB_MAJOR 4
 #endif
 
-int main()
+int main(void)
 {
   // because of the API changes we have to test different functions depending
   // on the version of GIFLIB

Tests/FindGLUT/Test/main.c

@@ -1,7 +1,7 @@
 #include <GL/glut.h>
 #include <stdio.h>
 
-int main()
+int main(void)
 {
   /* The following should call exit(1) and print
       freeglut  ERROR:  Function <glutCreateWindow> called

Tests/FindGnuTLS/Test/main.c

@@ -3,7 +3,7 @@
 #include <stdio.h>
 #include <string.h>
 
-int main()
+int main(void)
 {
   // test the linker
   gnutls_session_t session;

Tests/FindImageMagick/Test/main_magick_wand.c

@@ -1,6 +1,6 @@
 #include <wand/MagickWand.h>
 
-int main()
+int main(void)
 {
   MagickWand* wand = NewMagickWand();
   wand = DestroyMagickWand(wand);

Tests/FindJPEG/Test/main.c

@@ -4,7 +4,7 @@
 #include <jpeglib.h>
 // clang-format on
 
-int main()
+int main(void)
 {
   /* Without any JPEG file to open, test that the call fails as
      expected.  This tests that linking worked. */

Tests/FindJasper/Test/main.c

@@ -4,7 +4,7 @@
 #include <jasper/jasper.h>
 // clang-format on
 
-int main()
+int main(void)
 {
   /* Without any JPEG file to open, test that the call fails as
      expected.  This tests that linking worked. */

Tests/FindLAPACK/Test/main.c

@@ -14,7 +14,7 @@ typedef int64_t blas_int;
 void dgesv_(blas_int*, blas_int*, double*, blas_int*, blas_int*, double*,
             blas_int*, blas_int*);
 
-int main()
+int main(void)
 {
   double A[8] = {
     0, 1, 2, 3, 4, 5, 6, 7,

Tests/FindLibLZMA/Test/main.c

@@ -4,7 +4,7 @@
 
 static const uint8_t test_string[9] = "123456789";
 
-int main()
+int main(void)
 {
   static const uint32_t test_vector = 0xCBF43926;
 

Tests/FindLibRHash/Test/main.c

@@ -1,6 +1,6 @@
 #include <rhash.h>
 
-int main()
+int main(void)
 {
   rhash_library_init();
   return 0;

Tests/FindLibUV/Test/main.c

@@ -1,6 +1,6 @@
 #include <uv.h>
 
-int main()
+int main(void)
 {
   uv_loop_close(uv_default_loop());
   return 0;

Tests/FindLibXml2/Test/main.c

@@ -2,7 +2,7 @@
 #include <libxml/tree.h>
 #include <string.h>
 
-int main()
+int main(void)
 {
   xmlDoc* doc;
 

Tests/FindLibXslt/Test/libexslt.c

@@ -2,7 +2,7 @@
 #include <libxslt/xslt.h>
 #include <libxslt/xsltInternals.h>
 
-int main()
+int main(void)
 {
   xsltInit();
 

Tests/FindLibXslt/Test/libxslt.c

@@ -4,7 +4,7 @@
 #include <stdio.h>
 #include <string.h>
 
-int main()
+int main(void)
 {
   xsltInit();
 

Tests/FindLibinput/Test/main.c

@@ -1,7 +1,7 @@
 #include <libinput.h>
 #include <stdio.h>
 
-int main()
+int main(void)
 {
   struct libinput_interface interface;
   interface.open_restricted = 0;

Tests/FindODBC/Test/main.c

@@ -3,7 +3,7 @@
 #endif
 #include <sql.h>
 
-int main()
+int main(void)
 {
   SQLHENV env;
   SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &env);

Tests/FindOpenACC/CTest/main.c

@@ -8,7 +8,7 @@ void vecaddgpu(float* r, float* a, float* b, int n)
     r[i] = a[i] + b[i];
 }
 
-int main()
+int main(void)
 {
   int n = 100000; /* vector length */
   float* a;       /* input vector 1 */

Tests/FindOpenCL/Test/main.c

@@ -4,7 +4,7 @@
 #  include <CL/cl.h>
 #endif
 
-int main()
+int main(void)
 {
   cl_uint platformIdCount;
 

Tests/FindOpenGL/Test/main.c

@@ -9,7 +9,7 @@
 
 #include <stdio.h>
 
-int main()
+int main(void)
 {
   /* Reference a GL symbol without requiring a context at runtime.  */
   printf("&glGetString = %p\n", &glGetString);

Tests/FindOpenGL/Test/main_gles2.c

@@ -9,7 +9,7 @@
 
 #include <stdio.h>
 
-int main()
+int main(void)
 {
   /* Reference a GL symbol without requiring a context at runtime.  */
   printf("&glGetString = %p\n", &glGetString);

Tests/FindOpenGL/Test/main_gles3.c

@@ -9,7 +9,7 @@
 
 #include <stdio.h>
 
-int main()
+int main(void)
 {
   /* Reference a GL symbol without requiring a context at runtime.  */
   printf("&glGetString = %p\n", &glGetString);

Tests/FindOpenMP/Test/main.c

@@ -1,5 +1,5 @@
 #include <omp.h>
-int main()
+int main(void)
 {
 #ifndef _OPENMP
   breaks_on_purpose

Tests/FindOpenMP/Test/scaltest.c

@@ -6,7 +6,7 @@ extern "C"
 #endif
 int scalprod(int n, double* x, double* y, double* res);
 
-int main()
+int main(void)
 {
   double a[5] = { 1., 2., 3., 4., 5. };
   double b[5] = { 2., 3., 4., 5., 6. };

Tests/FindPNG/Test/main.c

@@ -2,7 +2,7 @@
 #include <png.h>
 #include <string.h>
 
-int main()
+int main(void)
 {
   png_uint_32 png_version;
   char png_version_string[16];

Tests/FindPackageTest/Exporter/dummy.c

@@ -1,4 +1,4 @@
-int main()
+int main(void)
 {
   return 0;
 }