d2b3a5486c
Unions are somewhat hard to implement in Go because they are not a native type. But it is actually possible with some compiler magic. This commit inserts a special "C union" field at the start of a struct to indicate that it is a union. As such a field cannot be written directly in Go, this is a useful to distinguish structs and unions.
41 строка
973 Б
C
41 строка
973 Б
C
typedef short myint;
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int add(int a, int b);
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typedef int (*binop_t) (int, int);
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int doCallback(int a, int b, binop_t cb);
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typedef int * intPointer;
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void store(int value, int *ptr);
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typedef struct collection {
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short s;
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long l;
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float f;
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unsigned char c;
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} collection_t;
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typedef union joined {
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myint s;
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float f;
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short data[3];
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} joined_t;
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void unionSetShort(short s);
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void unionSetFloat(float f);
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void unionSetData(short f0, short f1, short f2);
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// test globals
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extern int global;
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extern _Bool globalBool;
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extern _Bool globalBool2;
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extern float globalFloat;
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extern double globalDouble;
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extern _Complex float globalComplexFloat;
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extern _Complex double globalComplexDouble;
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extern _Complex double globalComplexLongDouble;
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extern collection_t globalStruct;
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extern int globalStructSize;
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extern short globalArray[3];
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extern joined_t globalUnion;
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extern int globalUnionSize;
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// test duplicate definitions
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int add(int a, int b);
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extern int global;
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