Remove bug when logger is disabled

src/engine.h

@@ -322,13 +322,13 @@ struct engine {
   /* timestamp offset for logger*/
   size_t logger_time_offset;
 
-  /* Need to dump a snapshot ? */
-  int dump_snapshot;
-
   /* Size of the dump file */
   int logger_size;
 #endif
 
+  /* Need to dump a snapshot ? */
+  int dump_snapshot;
+
   /* How many steps have we done with the same set of tasks? */
   int tasks_age;
 

src/logger.c

@@ -21,6 +21,7 @@
 #include "../config.h"
 
 #ifdef HAVE_POSIX_FALLOCATE /* Are we on a sensible platform? */
+#ifdef WITH_LOGGER
 
 /* Some standard headers. */
 #include <stdint.h>
@@ -432,4 +433,7 @@ int logger_read_timestamp(unsigned long long int *t, size_t *offset,
   return mask;
 }
 
+#endif /* WITH_LOGGER */
+
 #endif /* HAVE_POSIX_FALLOCATE */
+

src/logger.h

@@ -19,6 +19,8 @@
 #ifndef SWIFT_LOGGER_H
 #define SWIFT_LOGGER_H
 
+#ifdef WITH_LOGGER
+
 /* Includes. */
 #include "part.h"
 #include "units.h"
@@ -130,4 +132,6 @@ __attribute__((always_inline)) INLINE static int spart_should_write(
   return (sp->last_output > e->logger_max_steps);  
 }
 
+#endif /* WITH_LOGGER */
+
 #endif /* SWIFT_LOGGER_H */

src/runner.c

@@ -2704,6 +2704,7 @@ void *runner_main(void *data) {
  */
 void runner_do_logger(struct runner *r, struct cell *c, int timer) {
 
+#ifdef WITH_LOGGER
   const struct engine *e = r->e;
   struct part *restrict parts = c->parts;
   struct xpart *restrict xparts = c->xparts;
@@ -2779,4 +2780,9 @@ void runner_do_logger(struct runner *r, struct cell *c, int timer) {
 
   }
   if (timer) TIMER_TOC(timer_logger);
+
+#else
+  error("Logger disabled, please enable it during configuration");
+#endif
+  
 }