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62 lines
1.1 KiB
62 lines
1.1 KiB
5 years ago
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#include <stdio.h>
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#include <assert.h>
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#ifdef _WIN32
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#include <windows.h>
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#else
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#include <dlfcn.h>
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#endif
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#if defined _WIN32 || defined __CYGWIN__
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#define DLL_PUBLIC __declspec(dllexport)
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#else
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#if defined __GNUC__
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#define DLL_PUBLIC __attribute__ ((visibility("default")))
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#else
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#pragma message ("Compiler does not support symbol visibility.")
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#define DLL_PUBLIC
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#endif
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#endif
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typedef int (*fptr) (void);
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int DLL_PUBLIC
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func_from_executable(void)
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{
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return 42;
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}
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int main(int argc, char **argv)
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{
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int expected, actual;
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fptr importedfunc;
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if (argc=0) {}; // noop
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#ifdef _WIN32
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HMODULE h = LoadLibraryA(argv[1]);
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#else
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void *h = dlopen(argv[1], RTLD_NOW);
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#endif
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assert(h != NULL);
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#ifdef _WIN32
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importedfunc = (fptr) GetProcAddress (h, "func");
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#else
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importedfunc = (fptr) dlsym(h, "func");
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#endif
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assert(importedfunc != NULL);
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assert(importedfunc != func_from_executable);
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actual = (*importedfunc)();
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expected = func_from_executable();
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assert(actual == expected);
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#ifdef _WIN32
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FreeLibrary(h);
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#else
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dlclose(h);
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#endif
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return 0;
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}
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