[Tinycc-devel] Initialization of arrays of structs that contain array elements / Motivation

[WAEDT Karl NLTD-G (AREVA NP GmbH)]

Hello TCC developers,

// Arrays of structs that contain array elements should(must?) be initialized as done below for a0.
// An incorrect(?) initialization as for a1 resulted in crashes (in more complicated cases)
// or a "memory full" report by tcc.exe.
// The VC2003 and GCC produce the expected executable.
// Alas, my small example does not reproduce the error.
// After modifying the initialization, I compiled several projects with a total of more than 100 MB
// of (mostly generated) C source code at an AMAZING speed.
// The execution speed was ca. 10% to 45% below that of the optimized VC2003 executables which is OK for me.
// I think most important is a corroboration of experience feedback and test suites (perhaps with additional
// developer and test documentation) that DEMONSTRATE a stable product, suitable for industrial use.
// From the product quality I experienced during my initial tests, this goals seems to be reachable within the near future.

// Again, I'm amazed by the lightning translation speed of huge projects.

// Note: I still have to try the pyinc integration into Python (on the Windows platform),
//       which at the moment seems to be available only for Linux.

// tcc -c init_array_in_struct.c -Id:/opt/tcc/include
// tcc -run init_array_in_struct.c -Id:/opt/tcc/include d:/opt/tcc/lib/msvcrt.def

typedef struct {
    char elem1;
    double array1[4];
    int elem2;
} Struct1;

static Struct1 a0[] =  {
    { 1, { 1, 2, 3, 4 }, 5},
    { 1, { 1, 2, 3, 4 }, 5 },
    { 1, { 1, 2, 3, 4 }, 5 }
};

static Struct1 a1[] =  {
    { 1, 1, 2, 3, 4 },
    { 1, 1, 2, 3, 4 },
    { 1, 1, 2, 3, 4 },
    { 1, 1, 2, 3, 4 },
    { 1, 1, 2, 3, 4, 5 },
    { 1, 1, 2, 3, 4, 5 },
    { 1, 1, 2, 3, 4, 5 }
};

static Struct1 a2[] =  {
    { 1, 1, 2, 3, 4, 5 },
    { 1, 1, 2, 3, 4, 5 },
    { 1, 1, 2, 3, 4, 5 },
    { 1, 1, 2, 3, 4, 5 }
};

int main( int argc, char* argv[] )
{
    return 0;
}

Kind regards
       Seal