Calling NASM from CreateProcess within c++

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I am trying to assemble a .asm source from within my cpp code using CreateProcess on NASM.
When I used Windows Command Prompt nasm -f obj hello.asm, the source assembled well resulting is about 300kb .obj file but when I use "cmd /c nasm -f obj hello.asm" as createProcess 2nd parameter within c++, it resulted in an incomplete 60kb .obj file.
No error was produced and I just can't figure out what is wrong.

Posted 3-Jul-13 1:24am

Oso Oluwafemi Ebenezer

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Richard MacCutchan 3-Jul-13 9:06am

Try using cmd /k then you can check the output of the command window. Or pipe the output of the nasm command into a text file.

Oso Oluwafemi Ebenezer 3-Jul-13 9:38am

Thank you, found my error... I wasn't closing the ofstream that writes the .asm source to disk so NASM was assembling an empty .asm file

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Oso Oluwafemi Ebenezer · Accepted Answer · 2013-07-05T07:44:00

Solution 1

Thank you, found my error... I wasn't closing the ofstream that writes the .asm source to disk so NASM was assembling an empty .asm file

Posted 5-Jul-13 7:44am

Oso Oluwafemi Ebenezer