7 files changed, 30 insertions, 2 deletions
diff --git a/lib/Buffer.cc b/lib/Buffer.cc
index e8335d9..83369bd 100644
--- a/lib/Buffer.cc
+++ b/lib/Buffer.cc
@@ -9,6 +9,11 @@ Buffer::~Buffer() {
     free(buffer);
 }
 
+Buffer::Buffer(const Buffer & b) : Handle(-1), buffer(0), zero(b.zero), realsiz(b.realsiz), bufsiz(b.bufsiz), ptr(b.ptr) {
+    buffer = (char *) malloc(bufsiz);
+    memcpy(buffer, b.buffer, bufsiz);
+}
+
 ssize_t Buffer::write(const void *buf, size_t count) {
     if (!count) {
 	return 0;
diff --git a/lib/Exceptions.cc b/lib/Exceptions.cc
index 1283f6a..7c9d318 100644
--- a/lib/Exceptions.cc
+++ b/lib/Exceptions.cc
@@ -118,6 +118,13 @@ void xfree(void *& p) {
     }
 }
 
+void xfree(char *& p) {
+    if (p) {
+	::free(p - sizeof(size_t));
+	p = 0;
+    }
+}
+
 int xpipe(int * p, int flag) throw (GeneralException) {
     if (pipe(p)) {
 	throw GeneralException(String(_("Error creating pipe: ")) + strerror(errno));
diff --git a/lib/Handle.cc b/lib/Handle.cc
index 6c3bbbd..fe7c10b 100644
--- a/lib/Handle.cc
+++ b/lib/Handle.cc
@@ -6,7 +6,7 @@
 #include "Handle.h"
 #include "config.h"
 
-Handle::Handle(const Handle & nh) : h(nh.h >= 0 ? dup(nh.h) : nh.h), closed(false), nonblock(false), zfile(0), z(0) {
+Handle::Handle(const Handle & nh) : h(nh.h >= 0 ? dup(nh.h) : nh.h), closed(nh.closed), nonblock(nh.closed), zfile(0), z(0) {
 //    cerr << "Duplication of handle " << nh.h << " to " << h << endl;
     if ((h >= 0) && (nh.z)) {
 	SetZ(nh.z);
@@ -18,7 +18,7 @@ Handle::~Handle() {
     close();
 }
 
-Handle::Handle(int nh) : h(nh), closed(false), zfile(0), z(0) {
+Handle::Handle(int nh) : h(nh), closed(false), nonblock(false), zfile(0), z(0) {
 //    cerr << "Initialising handle " << h << endl;
 }
 
diff --git a/lib/InPipe.cc b/lib/InPipe.cc
index 978d24b..c61005f 100644
--- a/lib/InPipe.cc
+++ b/lib/InPipe.cc
@@ -4,6 +4,11 @@
 
 InPipe::InPipe() : Handle(pipe(p, 0)), hooked(0) { }
 
+InPipe::InPipe(const InPipe & i) : Handle(i), hooked(i.hooked) {
+    p[0] = GetHandle();
+    p[1] = dup(i.p[1]);
+}
+
 InPipe::~InPipe() {
     if (hooked) {
 	::close(1);
diff --git a/lib/Input.cc b/lib/Input.cc
index 318821d..5652c57 100644
--- a/lib/Input.cc
+++ b/lib/Input.cc
@@ -26,6 +26,9 @@ Input::Input(String no) throw (GeneralException) :
     date_modif = s.st_mtime;
 }
 
+Input::Input(const Input & i) : Handle(i), n(i.n), size(i.size), date_modif(i.date_modif) {
+}
+
 bool Input::CanWrite() {
     return 0;
 }
diff --git a/lib/OutPipe.cc b/lib/OutPipe.cc
index 4b2e710..be93e15 100644
--- a/lib/OutPipe.cc
+++ b/lib/OutPipe.cc
@@ -11,6 +11,11 @@ OutPipe::~OutPipe() {
     }
 }
 
+OutPipe::OutPipe(const OutPipe & o) : Handle(o), hooked(o.hooked) {
+    p[0] = dup(i.p[0]);
+    p[1] = GetHandle();
+}
+
 void OutPipe::Hook() {
     if (!hooked) {
 	hooked = 1;
diff --git a/lib/Output.cc b/lib/Output.cc
index 27f28d2..deecfb0 100644
--- a/lib/Output.cc
+++ b/lib/Output.cc
@@ -17,6 +17,9 @@ Output::Output(String no, int trunc = 1) throw (GeneralException) :
     }
 }
 
+Output::Output(const Output & o) : Handle(o), n(o.n) {
+}
+
 bool Output::CanWrite() {
     return 1;
 }