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Inspired by this PCG challange: https://codegolf.stackexchange.com/q/61836/31033 I asked my self, if one would try to leave as few trace as possible when compiling such kind of tool (no matter of a browser or something else), is there some way (aimed for gcc/clang as this probably are the preinstalled commandline compillers in such a working enviroment) to hand over source code to the compiler as command line argument or equal mechanism, without need for the source code beeing saved as *.c file, as the user would usually do?
(ofcourse the compiler will produce temp files while compiling, but those probably won't get scanned.)
530
If you only have a ". c" file, then you don't have a program. You must compile the program first to make an executable, and then you must run the program to get its output.
Though you can write "C" code in Notepad, you must have a C compiler, such as the compiler included with the Microsoft Visual Studio development suite, to compile the code. To write a C code file in Notepad, type your C code into a blank page in the text editor, and then save the file with a ".
You can compile individual files without main , but you cannot link them and of course cannot run them since they are not complete programs. Note that valgrind is not a static analysis tool but a runtime tool, and therefore it is useless on individual translation units not linked into a runnable program.
At least gcc can as it is able to read source from the standard input. You can also use Unix here string bash construction :
gcc -xc - << "int main() { exit(0); }"
or here file sh construction :
gcc -xc - <<MARK
int main() {
exit(0);
}
MARK
----EDIT----
You can also imagine using cryptography to encode your source, uncipher the content on the fly and inject the result to the standard input of gcc, something like:
uncipher myfile.protected | gcc -xc -
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