1 files changed, 8 insertions, 3 deletions

diff --git a/cache.c b/cache.c
index 7cdea9b..372e38d 100644
--- a/cache.c
+++ b/cache.c
@@ -13,8 +13,13 @@ const int NOLOCK = -1;
 char *cache_safe_filename(const char *unsafe)
 {
-	static char buf[PATH_MAX];
-	char *s = buf;
+	static char buf[4][PATH_MAX];
+	static int bufidx;
+	char *s;
 	char c;
 
+	bufidx++;
+	bufidx &= 3;
+	s = buf[bufidx];
+
 	while(unsafe && (c = *unsafe++) != 0) {
 		if (c == '/' || c == ' ' || c == '&' || c == '|' || 
@@ -24,5 +29,5 @@ char *cache_safe_filename(const char *unsafe)
 	}
 	*s = '\0';
-	return buf;
+	return buf[bufidx];
 }