NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE fails if the length of the argument is 10 #2280
Description
What is the issue you have?
A compilation error occurred while calling NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE and NLOHMANN_DEFINE_TYPE_INTRUSIVE with 9 or 10 members.
It' caused by wrong definition of NLOHMANN_JSON_PASTE10 and NLOHMAN_JSON_PASTE11 implemented by #2225
json/include/nlohmann/detail/macro_scope.hpp
Lines 141 to 142 in 0fe9f23
Please describe the steps to reproduce the issue.
- Define a
structorclasswith 9 or 10 members. - Call NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE or NLOHMANN_DEFINE_TYPE_INTRUSIVE with them like shown in this example.
- Compile the code.
Can you provide a small but working code example?
#include "single_include/nlohmann/json.hpp"
namespace shopping {
struct customer {
unsigned int postcode;
std::string address1;
std::string address2;
std::string city;
std::string country;
unsigned int telephone;
std::string name;
unsigned int age;
std::string sex;
};
NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(customer, postcode, address1, address2, city, country, telephone, name, age, sex);
} // namespace shopping
int main() {}What is the expected behavior?
Compilation fails.
test.cpp:16:113: error: too many arguments provided to function-like macro invocation
NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(customer, postcode, address1, address2, city, country, telephone, name, age, sex);
^
./single_include/nlohmann/json.hpp:2166:9: note: macro 'NLOHMANN_JSON_PASTE8' defined here
#define NLOHMANN_JSON_PASTE8(func, v1, v2, v3, v4, v5, v6, v7) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE7(func, v2, v3, v4, v5, v6, v7)
^
test.cpp:16:1: error: use of undeclared identifier 'NLOHMANN_JSON_PASTE8'
NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(customer, postcode, address1, address2, city, country, telephone, name, age, sex);
^
./single_include/nlohmann/json.hpp:2189:75: note: expanded from macro 'NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE'
void to_json(nlohmann::json& j, const Type& t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
^
./single_include/nlohmann/json.hpp:2157:9: note: expanded from macro 'NLOHMANN_JSON_PASTE'
NLOHMANN_JSON_PASTE10, NLOHMANN_JSON_PASTE9, NLOHMANN_JSON_PASTE8, NLOHMANN_JSON_PASTE7, \
^
test.cpp:16:113: error: too many arguments provided to function-like macro invocation
NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(customer, postcode, address1, address2, city, country, telephone, name, age, sex);
^
./single_include/nlohmann/json.hpp:2166:9: note: macro 'NLOHMANN_JSON_PASTE8' defined here
#define NLOHMANN_JSON_PASTE8(func, v1, v2, v3, v4, v5, v6, v7) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE7(func, v2, v3, v4, v5, v6, v7)
^
test.cpp:16:1: error: use of undeclared identifier 'NLOHMANN_JSON_PASTE8'
NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(customer, postcode, address1, address2, city, country, telephone, name, age, sex);
^
./single_include/nlohmann/json.hpp:2190:77: note: expanded from macro 'NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE'
void from_json(const nlohmann::json& j, Type& t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
^
./single_include/nlohmann/json.hpp:2157:9: note: expanded from macro 'NLOHMANN_JSON_PASTE'
NLOHMANN_JSON_PASTE10, NLOHMANN_JSON_PASTE9, NLOHMANN_JSON_PASTE8, NLOHMANN_JSON_PASTE7, \
^
4 errors generated.
And what is the actual behavior instead?
The compilation is successful.
Which compiler and operating system are you using?
- Compiler: Apple clang version 11.0.3 (clang-1103.0.32.62)
- Operating system: macOS Catalina 10.15.5（19F101）
Which version of the library did you use?
- latest release version 3.7.3
- other release - please state the version: ___
- the
developbranch
If you experience a compilation error: can you compile and run the unit tests?
- yes
- no - please copy/paste the error message below