Porting some code from GNU C++ to MS Visual C++... Syntax Error?

[slugg]

Hey guys. I haven't seriously used Microsoft Visual C++ in many years, so I'm not familiar with its quirks. I'm using Visual Studio 2010 on Windows 7. My code was originally written in Mac OS X (Unix) using the GNU C++ compiler.

For the most part, I've figured out all the other errors. There's one more thing that's killing my code: a syntax error that I just don't understand.

Here's the line:

component.push_back((ComponentPixel){i, j});

Here are the errors (all for the same line):

Error	5	error C2143: syntax error : missing ')' before '{'	
Error	6	error C2059: syntax error : ')'	
Error	7	error C2143: syntax error : missing ';' before '{'	
Error	8	error C2143: syntax error : missing ';' before '}'	
Error	9	error C2059: syntax error : ')'

ComponentPixel is a struct of types {int, int}.
component is of type std::vector<ComponentPixel>

Thanks in advance

 

[degibson]

Maybe like the compiler isn't respecting implicit operator= on your struct.
Code:

ComponentPixel pixel = {i, j};
component.push_back(pixel);

 

[slugg]

Maybe like the compiler isn't respecting implicit operator= on your struct.
Code:

ComponentPixel pixel = {i, j};
component.push_back(pixel);

That solved it. Really annoying, since I had to change that in 18 different places (two different neighborhood based algorithms). But alas, it works! Thanks!

 

[postmortemIA]

FYI MinGW (gcc compiler for Windows) has greatly evolved over the years, and it is probably easier to use similar gcc-based toolchain to port code.

 

[Ken g6]

*Sigh* MinGW and msys. Sometimes it's easier; sometimes it's not. It's usually easier for CPU-only code without a lot of external libraries. But I guess you got it working.

 

[degibson]

That solved it. Really annoying, since I had to change that in 18 different places (two different neighborhood based algorithms). But alas, it works! Thanks!

I've run into this before. G++ adds extensions to C++. This is one of them.
http://gcc.gnu.org/onlinedocs/gcc/Compound-Literals.html#Compound-Literals

 

[Cogman]

*Sigh* MinGW and msys. Sometimes it's easier; sometimes it's not. It's usually easier for CPU-only code without a lot of external libraries. But I guess you got it working.

Yep. If you are using open sourced libraries, MingW is generally good. If you want to use MS libraries, you've got a lot of hurting coming. DirectX 10 doesn't mix well with MingW