generic-msvc.h(91): error C2664

Hello all

I am trying to compile pgRouting on appveyor CI when compiling with pg >= 9.5

I am getting the following error:

C:\Program Files\PostgreSQL\9.5\include\server\port/atomics/generic-msvc.h(91): error C2664: '__int64 _InterlockedCompareExchange64(volatile __int64 *,__int64,__int64)' : cannot convert argument 1 from 'volatile uint64 *' to 'volatile __int64 *' [C:\build\pgrouting\build\pg95\x64\src\tsp\tsp.vcxproj]

This error happens when C++ code that needs palloc is being compiled.

There is no problem when compiling C code.

On the documentation of the  _InterlockedExchangeAdd64 [1] there is no uint64 * type

This code [2] use [3] where uint64 is used

Maybe I am doing something wrong including some postgres files on these [4] & [5].

A sample compilation with this error is in [6] and there is no problem at all with pg 9.4 [7]

Any feedback would be greatly appreciated

Vicky

[1] https://docs.microsoft.com/en-us/cpp/intrinsics/interlockedexchangeadd-intrinsic-functions

[2] https://github.com/postgres/postgres/blob/REL9_5_STABLE/src/include/port/atomics/generic-msvc.h#L101

[3] https://github.com/postgres/postgres/blob/REL9_5_STABLE/src/include/port/atomics/generic-msvc.h#L43

[4] https://github.com/cvvergara/pgrouting/blob/appveyor-pg95/include/cpp_common/pgr_alloc.hpp

[5] https://github.com/cvvergara/pgrouting/blob/appveyor-pg95/include/c_common/postgres_connection.h

[6] https://ci.appveyor.com/project/cvvergara/pgrouting/build/2.6.1936#L415

[7] https://ci.appveyor.com/project/cvvergara/pgrouting/build/2.6.1934