- (int (*)()) i2d_ASN1_BIT_STRING,
- (char *(*)()) d2i_ASN1_BIT_STRING,
- (char *(*)()) ASN1_STRING_new,
- (void (*)()) ASN1_STRING_free};
+ (I2D_OF(void)) i2d_ASN1_BIT_STRING,
+ (D2I_OF(void)) d2i_ASN1_BIT_STRING,
+ (void *(*)(void))ASN1_STRING_new,
+ (void (*)(void *))ASN1_STRING_free};