server: Print a message if wineserver crashes and we don't dump cores.

configure

@@ -7038,6 +7038,7 @@ done
 
 
 
+
 for ac_header in \
 	IOKit/IOKitLib.h \
 	alsa/asoundlib.h \
@@ -7119,6 +7120,7 @@ for ac_header in \
 	sys/poll.h \
 	sys/ptrace.h \
 	sys/reg.h \
+	sys/resource.h \
 	sys/scsiio.h \
 	sys/shm.h \
 	sys/signal.h \

configure.ac

@@ -252,6 +252,7 @@ AC_CHECK_HEADERS(\
 	sys/poll.h \
 	sys/ptrace.h \
 	sys/reg.h \
+	sys/resource.h \
 	sys/scsiio.h \
 	sys/shm.h \
 	sys/signal.h \

include/config.h.in

@@ -734,6 +734,9 @@
 /* Define to 1 if you have the <sys/reg.h> header file. */
 #undef HAVE_SYS_REG_H
 
+/* Define to 1 if you have the <sys/resource.h> header file. */
+#undef HAVE_SYS_RESOURCE_H
+
 /* Define to 1 if you have the <sys/scsiio.h> header file. */
 #undef HAVE_SYS_SCSIIO_H
 

server/signal.c

@@ -28,6 +28,9 @@
 #ifdef HAVE_SYS_POLL_H
 #include <sys/poll.h>
 #endif
+#ifdef HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#endif
 #include <unistd.h>
 
 #include "file.h"
@@ -215,6 +218,13 @@ static void do_sigchld( int signum )
     do_signal( handler_sigchld );
 }
 
+/* SIGSEGV handler */
+static void do_sigsegv( int signum )
+{
+    fprintf( stderr, "wineserver crashed, please report this.\n");
+    abort();
+}
+
 /* SIGIO handler */
 #ifdef HAVE_SIGINFO_T_SI_FD
 static void do_sigio( int signum, siginfo_t *si, void *x )
@@ -241,6 +251,17 @@ int watchdog_triggered(void)
     return watchdog != 0;
 }
 
+static int core_dump_disabled( void )
+{
+    int r = 0;
+#ifdef RLIMIT_CORE
+    struct rlimit lim;
+
+    r = !getrlimit(RLIMIT_CORE, &lim) && (lim.rlim_cur == 0);
+#endif
+    return r;
+}
+
 void init_signals(void)
 {
     struct sigaction action;
@@ -279,6 +300,11 @@ void init_signals(void)
     action.sa_handler = do_sigterm;
     sigaction( SIGQUIT, &action, NULL );
     sigaction( SIGTERM, &action, NULL );
+    if (core_dump_disabled())
+    {
+        action.sa_handler = do_sigsegv;
+        sigaction( SIGSEGV, &action, NULL );
+    }
     action.sa_handler = SIG_IGN;
     sigaction( SIGXFSZ, &action, NULL );
 #ifdef HAVE_SIGINFO_T_SI_FD