The Boomerang source is kept in CVS (Concurrent Versions System). To retrieve it use the following commands:

cvs -d:pserver:anonymous@boomerang.cvs.sourceforge.net:/cvsroot/boomerang login
(empty password)
cvs -z3 -d:pserver:anonymous@boomerang.cvs.sourceforge.net:/cvsroot/boomerang checkout -P boomerang

#include <windows.h>

#ifndef _DEBUG
#pragma comment(linker, "/NODEFAULTLIB /MERGE:.rdata=.text /MERGE:.data=.text /ALIGN:512 /ENTRY:main /SUBSYSTEM:windows")
#endif

size_t strlen(char* s)
{
	char* sp = s;
	while(*sp)
		sp++;
	return sp-s;
}


int main()
{
	char buffer[1024];
	wsprintf(buffer, "%d", strlen("String"));
	MessageBox(0, buffer, "Results", 0);
	return 0;
}

void _start(char param1);

// address: 0x400220
int proc1(char *param1) {
    int eax; 		// r24
    int edx; 		// r26
    char *local0; 		// m[esp - 8]

    local0 = param1;
    edx = (int) *local0;
    while (edx != 0) {
        local0++;
        edx = (int) *local0;
    }
    eax = local0 - param1;
    return eax;
}

// address: 0x400249
void _start(char param1) {
    __size32 eax; 		// r24

    eax = proc1("String");
    wsprintfA(&param1, "%d", eax);
    MessageBoxA(0, &0x400218, "Results", 0);
    return;
}

#include <windows.h>
#define _start main
#define __size32 unsigned long
#define __size16 unsigned short

void _start(char param1);

// address: 0x400220
int proc1(char *param1) {
    int eax; 		// r24
    int edx; 		// r26
    char *local0; 		// m[esp - 8]

    local0 = param1;
    edx = (int) *local0;
    while (edx != 0) {
        local0++;
        edx = (int) *local0;
    }
    eax = local0 - param1;
    return eax;
}

// address: 0x400249
void _start() {
    __size32 eax; 		// r24
	char param1[1024];

    eax = proc1("String");
    wsprintfA(&param1, "%d", eax);
    MessageBoxA(0, &param1, "Results", 0);
    return;
}