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authorPeter Stephenson <pws@users.sourceforge.net>2009-09-05 19:49:19 +0000
committerPeter Stephenson <pws@users.sourceforge.net>2009-09-05 19:49:19 +0000
commit1acf23db3eceaae559328db68d6aae755edb0fb8 (patch)
tree38e42f719e3a3671d1850023ecc5e13d7a40ee41 /Src/params.c
parent6d4d1261a5c813033f01e90c708c0dcfbc7e1b6e (diff)
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27243: reverse indexing of arrays with beginning index out of range returned
wrong value
Diffstat (limited to 'Src/params.c')
-rw-r--r--Src/params.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/Src/params.c b/Src/params.c
index 4767aaa34..0425e0700 100644
--- a/Src/params.c
+++ b/Src/params.c
@@ -1345,6 +1345,11 @@ getarg(char **str, int *inv, Value v, int a2, zlong *w,
 	    len = arrlen(ta);
 	    if (beg < 0)
 		beg += len;
+	    if (down) {
+		if (beg < 0)
+		    return 0;
+	    } else if (beg >= len)
+		return len + 1;
 	    if (beg >= 0 && beg < len) {
 		if (down) {
 		    if (!hasbeg)
@@ -1363,6 +1368,11 @@ getarg(char **str, int *inv, Value v, int a2, zlong *w,
 	    len = arrlen(ta);
 	    if (beg < 0)
 		beg += len;
+	    if (down) {
+		if (beg < 0)
+		    return 0;
+	    } else if (beg >= len)
+		return len + 1;
 	    if (beg >= 0 && beg < len) {
 		if (down) {
 		    if (!hasbeg)