Compilation error on android arm64-v8a

[ddovod]

Hi.
If you try to

Json::Value someJsonValue;
int64_t someIntValue = 45;  // <-- note on type
someJsonValue = someIntValue;  // <-- error

you'll get a compiler error error: conversion from 'int64_t' (aka 'long') to 'Json::Value' is ambiguous.
On iOS it compiles fine both for armv7 and arm64, but on android arm64-v8a long and long long are different enough to trigger compiler error, however both are 8 bytes.

[dota17]

Hi @ddovod I've found some issues are much the same with your question here, and probably they may be able to resolve your concerns.

1. Conversion of Json::Value to long int is ambiguous #64
2. Write unsigned long to a json file #879
3. Issue with 64-bit integers on 86_x64 Linux #509

[baylesj]

Is JSON_HAS_INT64 defined as true? Value should have a setter explicitly for int64_t...

typedef int64_t Int64;

#if defined(JSON_HAS_INT64)
  Value(Int64 value);
  Value(UInt64 value);
#endif // if defined(JSON_HAS_INT64)

[ddovod]

Hi. Probably it's fixed already because in our copy of jsoncpp config.h has this definitions of Int64 and UInt64:

#if defined(_MSC_VER) // Microsoft Visual Studio
typedef __int64 Int64;
typedef unsigned __int64 UInt64;
#else                 // if defined(_MSC_VER) // Other platforms, use long long
typedef long long int Int64;
typedef unsigned long long int UInt64;
#endif // if defined(_MSC_VER)
typedef Int64 LargestInt;
typedef UInt64 LargestUInt;
#define JSON_HAS_INT64
#endif // if defined(JSON_NO_INT64)

but in master it is

#if defined(_MSC_VER) // Microsoft Visual Studio
typedef __int64 Int64;
typedef unsigned __int64 UInt64;
#else                 // if defined(_MSC_VER) // Other platforms, use long long
typedef int64_t Int64;
typedef uint64_t UInt64;
#endif                // if defined(_MSC_VER)
typedef Int64 LargestInt;
typedef UInt64 LargestUInt;
#define JSON_HAS_INT64
#endif // if defined(JSON_NO_INT64)

I'll check that, thanks!

[baylesj]

Ahh, cool. It's nice when updates fix things :).

Closing now, feel free to reopen/comment/message if it comes up again.