expected unqualified-id before token... 'std::'

Question

When i compile C++ code in an Android NDK project i get:

    expected unqualified-id before '(' token    FPEnvironment_DUMMY.h   /PocoFoundation/jni/include/Poco    line 98 C/C++ Problem

The error origins from the lines:

    inline bool FPEnvironmentImpl::isInfiniteImpl(double value)
    {
        return std::isinf(value) != 0;
    }

The following packet is included:

    #include <cmath>

It seems that the error disappear when i remove std::, why does this happen? I have to many source files to remove the class name std in all of them :/

Create a cpp file with nothing except `void test(){std::isinf(7);}` and the `#include` required to make it compile. That work? — Yakk - Adam Nevraumont, Mar 11 '13 at 11:45
Same problem: #include void test(){std::isinf(7);} Changing it to the following removes the error: #include void test(){isinf(7);} — David Karlsson, Mar 11 '13 at 11:55

David Karlsson · Accepted Answer · 2013-03-22T14:20:45.210

So the solution i found is :

remove std:: from the header-files signalled by the errors when building according to this

Since we next were going to include the static lib we built here in an eclipse-Android project the new compilation required std:: in the headers again so we simply reverted them back to their original style std::isinf etc. The usage of std:: depends on what stdlibrary you use, gnu or stdl_port..

The issue is discussed here

expected unqualified-id before token... 'std::'

1 Answers1