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-rw-r--r--rts/eventlog/EventLog.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/rts/eventlog/EventLog.c b/rts/eventlog/EventLog.c
index a3103775d9..66b589e282 100644
--- a/rts/eventlog/EventLog.c
+++ b/rts/eventlog/EventLog.c
@@ -237,7 +237,10 @@ initEventLogging(void)
// Forked process, eventlog already started by the parent
// before fork
event_log_pid = getpid();
- sprintf(event_log_filename, "%s.%d.eventlog", prog, event_log_pid);
+ // We don't have a FMT* symbol for pid_t, so we go via Word64
+ // to be sure of not losing range. It would be nicer to have a
+ // FMT* symbol or similar, though.
+ sprintf(event_log_filename, "%s.%" FMT_Word64 ".eventlog", prog, (StgWord64)event_log_pid);
}
stgFree(prog);