Ray molenkamp
ea70bd2abf
Picked up while investigating a build error on the functions branch which seems to use this specific header in a way master doesn't. The problem: The MSVC headers define a `_CONCAT` macro, so does BLI_kdtree_imp.h however at the end `BLI_kdtree_imp.h` undefines the macro making the MS headers that still rely on it "unhappy". Who's fault is this: Ours, C99 Spec says ``` 7.1.3 Reserved identifiers - All identifiers that begin with an underscore and either an uppercase letter or another underscore are always reserved for any use. ... if the program removes (with #undef) any macro definition of an identifier in the first group listed above, the behavior is undefined. ``` So we should not have defined it, and we definitely should not have undefined it. We have *tons* of these violations, although fixing them would be great at one point lots of them are in /extern or in the 3rd party deps, I'd rather deal with them on a case by case basis when it actually causes issues. Differential Revision: https://developer.blender.org/D5790 Reviewers: campbellbarton, JacquesLucke
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