diff -urp ltrace-0.5-1/ltrace.h ltrace-0.5/ltrace.h

--- ltrace-0.5-1/ltrace.h	2008-10-07 12:05:57.000000000 +0200

+++ ltrace-0.5/ltrace.h	2008-10-07 12:06:20.000000000 +0200

@@ -173,6 +173,7 @@ extern void reinitialize_breakpoints(str

 extern struct process *open_program(char *filename, pid_t pid);

 extern void open_pid(pid_t pid, int verbose);

+extern void open_forked_pid(pid_t pid);

 extern void show_summary(void);

 /* Arch-dependent stuff: */

diff -urp ltrace-0.5-1/ltrace.h.orig ltrace-0.5/ltrace.h.orig

--- ltrace-0.5-1/ltrace.h.orig	2006-06-14 06:55:21.000000000 +0200

+++ ltrace-0.5/ltrace.h.orig	2008-10-07 12:06:19.000000000 +0200

@@ -12,6 +12,7 @@

 #include "sysdep.h"

 #define MAX_LIBRARY	30

+#define TRACE_FORK	1

 #if defined HAVE_LIBIBERTY || defined HAVE_LIBSUPC__

 # define USE_DEMANGLE

@@ -176,7 +177,7 @@ extern void show_summary(void);

 /* Arch-dependent stuff: */

 extern char *pid2name(pid_t pid);

-extern void trace_set_options(struct process *proc, pid_t pid);

+extern void trace_set_options(struct process *proc, pid_t pid, int option);

 extern void trace_me(void);

 extern int trace_pid(pid_t pid);

 extern void untrace_pid(pid_t pid);

@@ -204,5 +205,5 @@ extern void *sym2addr(struct process *, 

 #if 0				/* not yet */

 extern int umoven(struct process *proc, void *addr, int len, void *laddr);

 #endif

-

+extern ulong get_child_pid(pid_t pid);

 #endif

diff -urp ltrace-0.5-1/proc.c ltrace-0.5/proc.c

--- ltrace-0.5-1/proc.c	2008-10-07 12:05:58.000000000 +0200

+++ ltrace-0.5/proc.c	2008-10-07 12:06:20.000000000 +0200

@@ -58,3 +58,11 @@ void open_pid(pid_t pid, int verbose)

 	proc = open_program(filename, 0);

 	proc->pid = pid;

 }

+

+void open_forked_pid(pid_t pid)

+{

+	char *filename = pid2name(pid);

+	struct process *proc = open_program(filename, 0);

+	proc->pid = pid;

+	proc->breakpoints_enabled = -1;

+}

Only in ltrace-0.5: proc.c.orig

diff -urp ltrace-0.5-1/testsuite/lib/ltrace.exp ltrace-0.5/testsuite/lib/ltrace.exp

--- ltrace-0.5-1/testsuite/lib/ltrace.exp	2006-03-14 00:12:01.000000000 +0100

+++ ltrace-0.5/testsuite/lib/ltrace.exp	2008-10-07 12:06:20.000000000 +0200

@@ -260,7 +260,7 @@ proc ltrace_saveoutput { args } {

 proc ltrace_verify_output { file_to_search pattern {instance_no 0}} {

 	# compute the number of PATTERN in FILE_TO_SEARCH by grep and wc.

-	catch "exec sh -c {grep $pattern $file_to_search | wc -l ;exit}" output

+	catch "exec sh -c {egrep $pattern $file_to_search | wc -l ;exit}" output

 	verbose "output = $output"

 	if { $instance_no == 0 } then {

diff -urp ltrace-0.5-1/testsuite/ltrace.minor/trace-fork.exp ltrace-0.5/testsuite/ltrace.minor/trace-fork.exp

--- ltrace-0.5-1/testsuite/ltrace.minor/trace-fork.exp	2006-03-14 00:12:01.000000000 +0100

+++ ltrace-0.5/testsuite/ltrace.minor/trace-fork.exp	2008-10-07 12:06:20.000000000 +0200

@@ -35,6 +35,19 @@ if [regexp {ELF from incompatible archit

 ltrace_saveoutput "${exec_output}" ${srcdir}/${subdir}/${testfile}.ltrace

-set pattern "fork"

+if [ regexp {Cannot attach} $exec_output ] {

+	fail "Couldn't attach to forked process!"

+	return

+}

+

+set pattern "^fork"

 ltrace_verify_output ${srcdir}/${subdir}/${testfile}.ltrace $pattern 1

+set pattern {'^\[pid [0-9]*\][ \t]*(printf|puts)'}

+ltrace_verify_output ${srcdir}/${subdir}/${testfile}.ltrace $pattern 2

+

+set pattern {'^\[pid [0-9]*\][ \t]*wait'}

+ltrace_verify_output ${srcdir}/${subdir}/${testfile}.ltrace $pattern 1

+

+set pattern {'^\[pid [0-9]*\][ \t]*sleep'}

+ltrace_verify_output ${srcdir}/${subdir}/${testfile}.ltrace $pattern 1

diff -urp ltrace-0.5-1/wait_for_something.c ltrace-0.5/wait_for_something.c

--- ltrace-0.5-1/wait_for_something.c	2008-10-07 12:05:57.000000000 +0200

+++ ltrace-0.5/wait_for_something.c	2008-10-07 12:06:20.000000000 +0200

@@ -103,7 +103,8 @@ struct event *wait_for_something(void)

 		event.e_un.signum = WSTOPSIG(status);

 		child_pid = (pid_t) get_child_pid(event.proc->pid);

                 if (child_pid){

-			open_pid(child_pid,0);

+			debug (3, "fork: get_child_pid gave us %d", child_pid);

+			open_forked_pid(child_pid);

                 }

                 enable_all_breakpoints(event.proc);

 		continue_after_signal(event.proc->pid, event.e_un.signum);