fedjmike / mini-c Goto Github PK

do you think there should be tests that test for IF statement? i saw the example only contains while statements but no IF statement.

also, awesome project! :D

main.c

#include <stdio.h>

int main(int argc, char **argv){
    int i=0;
    while(i<1000000){
        printf("\r%i",i);
        fflush(stdout);
	i=i+1;
    }
    printf("\n");
    return 0;
}

Compiling:

mcc ./main.c

Errors:

mcc ./main.c 
./main.c:7: error: no symbol 'fflush' declared
./main.c:7: error: no symbol 'stdout' declared

There is some equivalence to do this?

OS: win10

Version: latest win branch (023992f on Jul 2 2015)

Example: By first assigning a = 9 and b = -2 and then computing a + a*b, the compiler wrongly gives -36, indicating it actually did (a+a)*b.

Anybody who knows C can use your mini-c as the minimal self-hosting subset of C compiler and can implement the whole C compiler or other languages.

What would also be interesting is to bootstrap mini-c from scratch. Currently you require some kind of a C compiler like gcc to be present on the system.

Here is an example of an approach that doesn't require any compiler at all, it starts from a small hand written machine code and then it goes from there to develop a structured programming language called BCC: http://rano.org/bcompiler.html (I made a mirror at github here: https://github.com/certik/bcompiler/blob/master/bcc.bc)

So the goal would be to write a compiler in BCC that can compile mini-c.

The selftest test case passes just fine. However, when trying to compile cc.c using the ccself binary, it fails with the following errors.

u@x220 ~/D/c/c/mini-c> make selftest
gcc -m32 -std=gnu11 -Werror -Wall cc.c -o cc
./cc cc.c
gcc -m32 a.s -o ccself
./ccself tests/triangular.c
gcc -m32 a.s -o triangular; ./triangular 5; [ $? -eq 15 ]
u@x220 ~/D/c/c/mini-c> ./ccself cc.c
cc.c:719: error: expected ')', found '�'
cc.c:719: error: expected ';', found '�'
cc.c:719: error: expected '}', found '�'

Note, compiling cc.c with the produced cc binary works just fine, and compiling triangular.c with ccself also works just fine.

Is ccself intended to be able to compile cc.c?