[libc++][ranges] fix an out-of-bounds access in 'ranges.shift_left.pass.cpp'

xiaoyang-sde · xiaoyang-sde · commit 020a097ceb20 · 2024-02-28T20:58:56.000-08:00
diff --git a/libcxx/test/std/algorithms/alg.modifying.operations/alg.shift/ranges.shift_left.pass.cpp b/libcxx/test/std/algorithms/alg.modifying.operations/alg.shift/ranges.shift_left.pass.cpp
@@ -68,7 +68,7 @@ constexpr void test_iter_sent() {
     }
 
     // (range) overload
-    for (size_t n = 0; n <= 15; ++n) {
+    for (size_t n = 0; n <= original.size(); ++n) {
       for (size_t k = 0; k <= n + 2; ++k) {
         auto begin = Iter(scratch.data());
         auto end   = Sent(Iter(scratch.data() + n));

Original file line number	Diff line number	Diff line change
`@@ -68,7 +68,7 @@ constexpr void test_iter_sent() {`
`68`	`68`	`}`
`69`	`69`
`70`	`70`	`// (range) overload`
`71`		`- for (size_t n = 0; n <= 15; ++n) {`
	`71`	`+ for (size_t n = 0; n <= original.size(); ++n) {`
`72`	`72`	`for (size_t k = 0; k <= n + 2; ++k) {`
`73`	`73`	`auto begin = Iter(scratch.data());`
`74`	`74`	`auto end = Sent(Iter(scratch.data() + n));`