Merge remote-tracking branch 'origin/patches-2.0'

Conflicts:
	evthread.c

bufferevent_filter.c

@@ -430,6 +430,7 @@ be_filter_readcb(struct bufferevent *underlying, void *_me)
 
 	/* XXXX use return value */
 	res = be_filter_process_input(bevf, state, &processed_any);
+	(void)res;
 
 	/* XXX This should be in process_input, not here.  There are
 	 * other places that can call process-input, and they should

bufferevent_openssl.c

@@ -1014,6 +1014,7 @@ be_openssl_outbuf_cb(struct evbuffer *buf,
 		consider_writing(bev_ssl);
 	}
 	/* XXX Handle r < 0 */
+        (void)r;
 }
 
 

bufferevent_sock.c

@@ -452,6 +452,7 @@ bufferevent_connect_getaddrinfo_cb(int result, struct evutil_addrinfo *ai,
 	/* XXX use the other addrinfos? */
 	/* XXX use this return value */
 	r = bufferevent_socket_connect(bev, ai->ai_addr, (int)ai->ai_addrlen);
+	(void)r;
 	_bufferevent_decref_and_unlock(bev);
 	evutil_freeaddrinfo(ai);
 }

configure.in

@@ -646,6 +646,16 @@ if test x$enable_gcc_warnings = xyes && test "$GCC" = "yes"; then
 #error
 #endif])], have_gcc45=yes, have_gcc45=no)
 
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
+#if !defined(__clang__)
+#error
+#endif])], have_clang=yes, have_clang=no)
+
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
+#if !defined(__clang__) || (__clang_major__ > 2) || (__clang_major__ == 2 && __clang_minor__ > 9)
+#error
+#endif])], have_clang29orlower=yes, have_clang29orlower=no)
+
   CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum -Werror"
   CFLAGS="$CFLAGS -Wno-unused-parameter -Wstrict-aliasing"
 
@@ -657,13 +667,27 @@ if test x$enable_gcc_warnings = xyes && test "$GCC" = "yes"; then
 
   if test x$have_gcc42 = xyes ; then
     # These warnings break gcc 4.0.2 and work on gcc 4.2
-    CFLAGS="$CFLAGS -Waddress -Wnormalized=id -Woverride-init"
+    CFLAGS="$CFLAGS -Waddress"
+  fi
+
+  if test x$have_gcc42 = xyes && test x$have_clang29orlower = xno; then
+    # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
+    # We only disable these for clang 2.9 and lower, in case they are
+    # supported in later versions.
+    CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
   fi
 
   if test x$have_gcc45 = xyes ; then
     # These warnings work on gcc 4.5
     CFLAGS="$CFLAGS -Wlogical-op"
   fi
+
+  if test x$have_clang = xyes; then
+    # Disable the unused-function warnings, because these trigger
+    # for minheap-internal.h related code.
+    CFLAGS="$CFLAGS -Wno-unused-function"
+  fi
+
 ##This will break the world on some 64-bit architectures
 # CFLAGS="$CFLAGS -Winline"
 

evdns.c

@@ -2701,10 +2701,13 @@ evdns_cancel_request(struct evdns_base *base, struct evdns_request *handle)
 {
 	struct request *req;
 
+	if (!handle->current_req)
+		return;
+
 	if (!base) {
 		/* This redundancy is silly; can we fix it? (Not for 2.0) XXXX */
 		base = handle->base;
-		if (!base && handle->current_req)
+		if (!base)
 			base = handle->current_req->base;
 	}
 

evthread.c

@@ -228,6 +228,7 @@ debug_cond_wait(void *_cond, void *_lock, const struct timeval *tv)
 {
 	int r;
 	struct debug_lock *lock = _lock;
+	EVUTIL_ASSERT(lock);
 	EVUTIL_ASSERT(DEBUG_LOCK_SIG == lock->signature);
 	EVLOCK_ASSERT_LOCKED(_lock);
 	evthread_debug_lock_mark_unlocked(0, lock);

http.c

@@ -1775,7 +1775,8 @@ evhttp_parse_headers(struct evhttp_request *req, struct evbuffer* buffer)
 	}
 
 	if (status == MORE_DATA_EXPECTED) {
-		if (req->headers_size + evbuffer_get_length(buffer) > req->evcon->max_headers_size)
+		if (req->evcon != NULL &&
+		req->headers_size + evbuffer_get_length(buffer) > req->evcon->max_headers_size)
 			return (DATA_TOO_LONG);
 	}
 

sample/dns-example.c

@@ -72,7 +72,6 @@ static void
 gai_callback(int err, struct evutil_addrinfo *ai, void *arg)
 {
 	const char *name = arg;
-	struct evutil_addrinfo *ai_first = NULL;
 	int i;
 	if (err) {
 		printf("%s: %s\n", name, evutil_gai_strerror(err));
@@ -95,8 +94,6 @@ gai_callback(int err, struct evutil_addrinfo *ai, void *arg)
 			printf("[%d] %s: %s\n",i,name,buf);
 		}
 	}
-	if (ai_first)
-		evutil_freeaddrinfo(ai_first);
 }
 
 static void
@@ -120,6 +117,8 @@ evdns_server_callback(struct evdns_server_request *req, void *data)
 			printf(" -- replying for %s (PTR)\n", req->questions[i]->name);
 			r = evdns_server_request_add_ptr_reply(req, NULL, req->questions[i]->name,
 											"foo.bar.example.com", 10);
+			if (r<0)
+				printf("ugh, no luck");
 		} else {
 			printf(" -- skipping %s [%d %d]\n", req->questions[i]->name,
 				   req->questions[i]->type, req->questions[i]->dns_question_class);

test/bench_httpclient.c

@@ -36,6 +36,7 @@
 # endif
 #endif
 #include <stdlib.h>
+#include <string.h>
 #include <errno.h>
 
 #include "event2/event.h"
@@ -130,6 +131,8 @@ launch_request(void)
 
 	struct request_info *ri;
 
+	memset(&sin, 0, sizeof(sin));
+
 	++total_n_launched;
 
 	sin.sin_family = AF_INET;

test/regress_buffer.c

@@ -1296,7 +1296,9 @@ test_evbuffer_callbacks(void *ptr)
 	evbuffer_drain(buf_out2, evbuffer_get_length(buf_out2));
 	/* Let's test the obsolete buffer_setcb function too. */
 	cb1 = evbuffer_add_cb(buf, log_change_callback, buf_out1);
+	tt_assert(cb1 != NULL);
 	cb2 = evbuffer_add_cb(buf, log_change_callback, buf_out2);
+	tt_assert(cb2 != NULL);
 	evbuffer_setcb(buf, self_draining_callback, NULL);
 	evbuffer_add_printf(buf, "This should get drained right away.");
 	tt_uint_op(evbuffer_get_length(buf), ==, 0);

test/regress_dns.c

@@ -1626,10 +1626,9 @@ gaic_launch(struct event_base *base, struct evdns_base *dns_base)
 }
 
 static void
-test_getaddrinfo_async_cancel_stress(void *arg)
+test_getaddrinfo_async_cancel_stress(void *ptr)
 {
-	struct basic_test_data *data = arg;
-	struct event_base *base = data->base;
+	struct event_base *base;
 	struct evdns_base *dns_base = NULL;
 	struct evdns_server_port *server = NULL;
 	evutil_socket_t fd = -1;
@@ -1701,7 +1700,7 @@ struct testcase_t dns_testcases[] = {
 	{ "getaddrinfo_async", test_getaddrinfo_async,
 	  TT_FORK|TT_NEED_BASE, &basic_setup, (char*)"" },
 	{ "getaddrinfo_cancel_stress", test_getaddrinfo_async_cancel_stress,
-	  TT_FORK|TT_NEED_BASE, &basic_setup, (char*)"" },
+	  TT_FORK, NULL, NULL },
 
 	END_OF_TESTCASES
 };

test/regress_http.c

@@ -570,6 +570,8 @@ http_bad_request_test(void *arg)
 	/* real NULL request */
 	http_request = "";
 
+	bufferevent_write(bev, http_request, strlen(http_request));
+
 	shutdown(fd, SHUT_WR);
 	timerclear(&tv);
 	tv.tv_usec = 10000;

test/regress_zlib.c

@@ -276,6 +276,7 @@ test_bufferevent_zlib(void *arg)
 	tt_int_op(r, ==, Z_OK);
 	memset(&z_input, 0, sizeof(z_input));
 	r = inflateInit(&z_input);
+	tt_int_op(r, ==, Z_OK);
 
 	/* initialize filters */
 	bev1 = bufferevent_filter_new(bev1, NULL, zlib_output_filter,