Why won't this template expression compile in MSVC 2015?

Asked Dec 06 '16 at 11:53

Active Dec 06 '16 at 12:18

Viewed 58 times

MSVC 2015 chokes on the following statement:

if (result > std::numeric_limits<int32_t>::max())
{
    ...
}

with this error:

error C2589: '(': illegal token on right side of '::'

Any idea why?

(I suspected it's an unimplemented C++11 feature and checked C++11 feature support for MSVC 2015, but have not found anything to indicate this).

EDIT

I'm trying to compile libosmium, which is a header-only library that makes heavy use of C++11 templating features. The above error occurs in osmium/osm/location.hpp. If I include this header file in main.cpp, with no other includes, it compiles without issues. If the header file is included via other headers, the error occurs.

edited Dec 06 '16 at 12:18

asked Dec 06 '16 at 11:53

Tony the Pony

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2

Most likely you forgot to `#include` the header file that defines `int32_t`. – Sam Varshavchik Dec 06 '16 at 11:56
Cannot reproduce http://rextester.com/CXJ86301 – P0W Dec 06 '16 at 12:00
Just checked, the code includes `` – Tony the Pony Dec 06 '16 at 12:00
1

I think it's `` – themagicalyang Dec 06 '16 at 12:01
1

Thanks! Just tried @P0W's example in my setup, and it compiles fine for me as well; the error must be caused by something else... – Tony the Pony Dec 06 '16 at 12:06
2

P0W's code compiles here, but if `#include `, then I also get errors (not the same as you though): I get `1>main.cpp(14): warning C4003: not enough actual parameters for macro 'max' 1>main.cpp(14): error C2589: '(': illegal token on right side of '::' 1>main.cpp(14): error C2059: syntax error: '::' 1>main.cpp(15): error C2143: syntax error: missing ';' before '{'`, line 14 beeing the line with `max`. – Jabberwocky Dec 06 '16 at 12:17
4

Refering to my previous comment: If I put `#undef max` after `#include ` it compiles fine. – Jabberwocky Dec 06 '16 at 12:20
6

[Syntax error with std::numeric_limits::max](http://stackoverflow.com/q/27442885/3953764) – Piotr Skotnicki Dec 06 '16 at 12:25
1

Yes, `windows.h` is the culprit -- and undefining `max` did indeed fix this particular error. Thanks everyone! – Tony the Pony Dec 06 '16 at 12:30
And, yes, there are other issues ... the root problem is that I'm compiling a library that was never intended for Windows. – Tony the Pony Dec 06 '16 at 12:34

Why won't this template expression compile in MSVC 2015?

0 Answers0