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How can I control static analyzed compiler error messages with templated libraries?


How can I control static analyzed compiler error messages with templated libraries?

By : user2954716
Date : November 22 2020, 10:31 AM
it should still fix some issue Both gcc and clang support Diagnostic Pragmas which will allow you to ignore specific diagnostic messages for a section of code. For example to disable -Wunused-variable like so:
code :
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-variable"
// include headers with warnings
#pragma GCC diagnostic pop


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How do you run your unit tests? Compiler flags? Static libraries?

How do you run your unit tests? Compiler flags? Static libraries?


By : user1932699
Date : March 29 2020, 07:55 AM
Does that help I tend to favour static libs over dlls so most of my C++ code ends up in static libs anyway and, as you've found, they're as easy to test as dlls.
For code that builds into an exe I either have a separate test project which simply includes the source files that are under test and that are usually built into the exe OR I build a new static lib that contains most of the exe and test that in the same way that I test all of my other static libs. I find that I usually take the 'most code in a library' approach with new projects and the 'pull the source files from the exe project into the test project' approach when I'm retro fitting tests to existing applications.
Should static libraries be always built with same compiler options as the application?

Should static libraries be always built with same compiler options as the application?


By : AGSoldier
Date : March 29 2020, 07:55 AM
Hope this helps No there is no other way - you must built the libraries (static or not) for each platform. As you probably already know static library is really just a container storing a buch of object files. Each object file contains binary code specific to platform that the library was built for (read: different set of assembly instructions). Yes, keeping the compiler options the same when you are building a library and the binary (program) that uses it the same is a very good practice. This way you are avoiding potentially very nasty problems. Some optimization options are binary incompatible (e.g.: you may compile a function in a library with a optimization that will cause it to return (or expect) a data by register), but your main program may expect that the function returns it by address on stack - big trouble.
Compiler bug? g++ allows variable-size static arrays, unless function is templated

Compiler bug? g++ allows variable-size static arrays, unless function is templated


By : Nazmus
Date : March 29 2020, 07:55 AM
hope this fix your issue After compiling your code with -ansi on gcc 4.7.0, I was able to reproduce this warning:
code :
warning: ISO C++ forbids variable length array 'bitVec' [-Wvla]
Are static c libraries created with one compiler compatible with another?

Are static c libraries created with one compiler compatible with another?


By : Tor Inge Vik
Date : March 29 2020, 07:55 AM
Hope this helps Static library is bundle of several object files which are always compiler specific. So if you try to link a gcc based lib with IAR compiler, you will get error at compile time due to mismatch between object file formats to be linked.
You need to rebuild your library using IAR.
Templated if fails with compiler error error: wrong number of template arguments (2, should be 3)

Templated if fails with compiler error error: wrong number of template arguments (2, should be 3)


By : user3737085
Date : March 29 2020, 07:55 AM
should help you out If I compile the following code with gcc , actually, just remove redundant typename. compiled with gcc 4.9.2.
code :
namespace TMP {
    // template to choose type depending on boolean condition
    template <bool condition, typename x, typename y>
    struct if_t
    {
        typedef y type;
    };
    template <typename x, typename y>
    struct if_t < true, x, y >
    {
        typedef x type;
    };

}
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