Multi entry points in C program

MrUmunhum · 08-11-2008, 04:24 PM

Hi group,

I have a stupid question.

I want to make multiple entry points to a C function, simular to
symbolic links for files. No real need just want to cut down my typing
while using the debugger.

I tried this but it did not work:

Code:

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
 int E();
 struct  timeval   Timer;
 struct  tm        Time;
#define TIME() \
  gettimeofday( &Timer, '\0' );               \
  localtime_r(  &Timer.tv_sec, &Time );       \
  fprintf( stderr,                            \
            "%.2d:%.2d:%.2d.%.3d %s:%d \n",   \
	    (int) Time.tm_hour,               \
	    (int) Time.tm_min,                \
	    (int) Time.tm_sec,                \
	    (int) Timer.tv_usec/1000,         \
             __FILE__,__LINE__ );
int main(int argc, char *argv[] ) {
  TIME();
int E() {
  system("/bin/sleep 2");
  TIME();
  return ; } }

Mr. C. · 08-11-2008, 04:30 PM

No can do. The C runtime is called before main(), and then branches to main.

What are trying to accomplish?

aleTT · 08-11-2008, 04:34 PM

I think he wants to define and at the same time call the function E().
Is it right ?

MrUmunhum · 08-11-2008, 04:59 PM

I am being lazy while using the debugger and don't want to type

'b at_this_very_long_function_name'

but rather just type

'b E'

.
Not all that important.

ta0kira · 08-11-2008, 06:00 PM

Code:

#include <stdio.h>


void this_is_my_very_very_long_function_name_that_i_dont_want_to_type_but_dont_want_to_rename()
{ fprintf(stderr, "very long function name for very short function\n"); }

void E() __attribute__ ((alias ("this_is_my_very_very_long_function_name_that_i_dont_want_to_type_but_dont_want_to_rename")));

int main()
{ E(); }

ta0kira

ErV · 08-11-2008, 06:08 PM

comment removed

Mr. C. · 08-11-2008, 06:47 PM

The debugger allows you to create aliases, and provides command and function name completion for you. Configure it any way you want.

MrUmunhum · 08-12-2008, 06:01 AM

Quote:

Originally Posted by ta0kira

Code:

#include <stdio.h>


void this_is_my_very_very_long_function_name_that_i_dont_want_to_type_but_dont_want_to_rename()
{ fprintf(stderr, "very long function name for very short function\n"); }

void E() __attribute__ ((alias ("this_is_my_very_very_long_function_name_that_i_dont_want_to_type_but_dont_want_to_rename")));

int main()
{ E(); }

ta0kira

Thanks, William.