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-rw-r--r--src/alloc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/alloc.c b/src/alloc.c
index 77807f6e086..25cf03dfa2e 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -100,6 +100,8 @@ extern void _free_internal (void *);
#if ! defined SYSTEM_MALLOC && ! defined SYNC_INPUT
#ifdef HAVE_PTHREAD
+# include "syssignal.h"
+
/* When GTK uses the file chooser dialog, different backends can be loaded
dynamically. One such a backend is the Gnome VFS backend that gets loaded
if you run Gnome. That backend creates several threads and also allocates