C, Python, ctypes exit code -1073741819 (0xC0000005) -

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c code(dll)

#include <math.h> #include <wchar.h> #include <stdlib.h> struct doc {     wchar_t path[512];     int r;     int g;     int b; };  struct docs {     struct doc docs[1000000]; };  struct color {     int r;     int g;     int b; };  float distance(int a, int b, int c, int d, int e, int f) {     return sqrt((a-b)*(a-b)+(c-d)*(c-d)+(e-f)*(e-f)); }  struct doc main(long len, struct color c, struct docs ds) {     long near = 1000000;     long l;     struct doc f_d;     (l = 0; l < len; l++){         struct doc d = ds.docs[l];         float dist = distance(c.r, d.r, c.g, d.g, c.b, d.b);         if (dist < near){             near = dist;             f_d = d;         }     }     return f_d; };

python code

class doc(ctypes.structure):     _fields_ = [("path", ctypes.c_wchar_p),                 ("r", ctypes.c_int),                 ("g", ctypes.c_int),                 ("b", ctypes.c_int)]  class docs(ctypes.structure):     _fields_ = [("docs", doc * 1000000)]  class color(ctypes.structure):     _fields_ = [("r", ctypes.c_int),                 ("g", ctypes.c_int),                 ("b", ctypes.c_int)]  structure = ctypes.cdll('st.dll').main structure.restype = doc structure.argstypes = (ctypes.c_long, color(), docs(),)

after calling main function python drops exit code -1073741819 after exe execution returns "process finished exit code -1073741819 (0xc0000005)"
think because of memory allocation or that.


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