6 files changed, 27 insertions, 10 deletions
diff --git a/src/polypcore/modinfo.c b/src/polypcore/modinfo.c
index 4a9be0f0..a2fffb01 100644
--- a/src/polypcore/modinfo.c
+++ b/src/polypcore/modinfo.c
@@ -38,6 +38,13 @@
 #define PA_SYMBOL_USAGE "pa__get_usage"
 #define PA_SYMBOL_VERSION "pa__get_version"
 
+/* lt_dlsym() violates ISO C, so confide the breakage into this function to
+ * avoid warnings. */
+typedef void (*fnptr)(void);
+static inline fnptr lt_dlsym_fn(lt_dlhandle handle, const char *symbol) {
+    return (fnptr) (long) lt_dlsym(handle, symbol);
+}
+
 pa_modinfo *pa_modinfo_get_by_handle(lt_dlhandle dl) {
     pa_modinfo *i;
     const char* (*func)(void);
@@ -45,16 +52,16 @@ pa_modinfo *pa_modinfo_get_by_handle(lt_dlhandle dl) {
 
     i = pa_xnew0(pa_modinfo, 1);
 
-    if ((func = (const char* (*)(void)) lt_dlsym(dl, PA_SYMBOL_AUTHOR)))
+    if ((func = (const char* (*)(void)) lt_dlsym_fn(dl, PA_SYMBOL_AUTHOR)))
         i->author = pa_xstrdup(func());
 
-    if ((func = (const char* (*)(void)) lt_dlsym(dl, PA_SYMBOL_DESCRIPTION)))
+    if ((func = (const char* (*)(void)) lt_dlsym_fn(dl, PA_SYMBOL_DESCRIPTION)))
         i->description = pa_xstrdup(func());
 
-    if ((func = (const char* (*)(void)) lt_dlsym(dl, PA_SYMBOL_USAGE)))
+    if ((func = (const char* (*)(void)) lt_dlsym_fn(dl, PA_SYMBOL_USAGE)))
         i->usage = pa_xstrdup(func());
 
-    if ((func = (const char* (*)(void)) lt_dlsym(dl, PA_SYMBOL_VERSION)))
+    if ((func = (const char* (*)(void)) lt_dlsym_fn(dl, PA_SYMBOL_VERSION)))
         i->version = pa_xstrdup(func());
 
     return i;
diff --git a/src/polypcore/module.c b/src/polypcore/module.c
index 0286bba8..b938750c 100644
--- a/src/polypcore/module.c
+++ b/src/polypcore/module.c
@@ -44,6 +44,13 @@
 
 #define UNLOAD_POLL_TIME 2
 
+/* lt_dlsym() violates ISO C, so confide the breakage into this function to
+ * avoid warnings. */
+typedef void (*fnptr)(void);
+static inline fnptr lt_dlsym_fn(lt_dlhandle handle, const char *symbol) {
+    return (fnptr) (long) lt_dlsym(handle, symbol);
+}
+
 static void timeout_callback(pa_mainloop_api *m, pa_time_event*e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
     pa_core *c = userdata;
     struct timeval ntv;
@@ -75,12 +82,12 @@ pa_module* pa_module_load(pa_core *c, const char *name, const char *argument) {
         goto fail;
     }
 
-    if (!(m->init = (int (*)(pa_core *_c, pa_module*_m)) lt_dlsym(m->dl, PA_SYMBOL_INIT))) {
+    if (!(m->init = (int (*)(pa_core *_c, pa_module*_m)) lt_dlsym_fn(m->dl, PA_SYMBOL_INIT))) {
         pa_log(__FILE__": Failed to load module \"%s\": symbol \""PA_SYMBOL_INIT"\" not found.", name);
         goto fail;
     }
 
-    if (!(m->done = (void (*)(pa_core *_c, pa_module*_m)) lt_dlsym(m->dl, PA_SYMBOL_DONE))) {
+    if (!(m->done = (void (*)(pa_core *_c, pa_module*_m)) lt_dlsym_fn(m->dl, PA_SYMBOL_DONE))) {
         pa_log(__FILE__": Failed to load module \"%s\": symbol \""PA_SYMBOL_DONE"\" not found.", name);
         goto fail;
     }
diff --git a/src/polypcore/pipe.h b/src/polypcore/pipe.h
index e9167782..276b072d 100644
--- a/src/polypcore/pipe.h
+++ b/src/polypcore/pipe.h
@@ -22,6 +22,10 @@
    USA.
 ***/
 
+#ifndef HAVE_PIPE
+
 int pipe(int filedes[2]);
 
 #endif
+
+#endif
diff --git a/src/polypcore/protocol-esound.c b/src/polypcore/protocol-esound.c
index 01a72e84..d7c9475a 100644
--- a/src/polypcore/protocol-esound.c
+++ b/src/polypcore/protocol-esound.c
@@ -515,7 +515,6 @@ static int esd_proto_server_info(struct connection *c, PA_GCC_UNUSED esd_proto_t
 }
 
 static int esd_proto_all_info(struct connection *c, esd_proto_t request, const void *data, size_t length) {
-    uint8_t *response;
     size_t t, k, s;
     struct connection *conn;
     uint32_t idx = PA_IDXSET_INVALID;
@@ -585,7 +584,6 @@ static int esd_proto_all_info(struct connection *c, esd_proto_t request, const v
     }
 
     assert(t == s*(nsamples+1)+k);
-    response += k;
     t -= k;
 
     connection_write(c, terminator, k);
diff --git a/src/polypcore/random.c b/src/polypcore/random.c
index 4bfce975..d7a37b0b 100644
--- a/src/polypcore/random.c
+++ b/src/polypcore/random.c
@@ -48,7 +48,7 @@ static int random_proper(void *ret_data, size_t length) {
 
 #else /* OS_IS_WIN32 */
 
-    int fd, ret;
+    int fd, ret = -1;
     ssize_t r = 0;
     const char **device;
 
diff --git a/src/polypcore/x11wrap.c b/src/polypcore/x11wrap.c
index 41a40764..b53a43b6 100644
--- a/src/polypcore/x11wrap.c
+++ b/src/polypcore/x11wrap.c
@@ -107,9 +107,10 @@ static void internal_io_event(pa_mainloop_api *m, pa_io_event *e, int fd, PA_GCC
 /* Add a new IO source for the specified X11 internal connection */
 static pa_x11_internal* x11_internal_add(pa_x11_wrapper *w, int fd) {
     pa_x11_internal *i;
-    assert(i && fd >= 0);
+    assert(fd >= 0);
 
     i = pa_xmalloc(sizeof(pa_x11_internal));
+    assert(i);
     i->wrapper = w;
     i->io_event = w->core->mainloop->io_new(w->core->mainloop, fd, PA_IO_EVENT_INPUT, internal_io_event, w);
     i->fd = fd;