Fix overflow in range lock (alibaba#973) (alibaba#974) (alibaba#975)

photonlibos · EricHuangqx · web-flow · commit ced952d414f2 · 2025-09-03T16:37:10.000+08:00
Co-authored-by: Eric &lt;qingxiang.hqx@alibaba-inc.com&gt;
diff --git a/common/range-lock.h b/common/range-lock.h
@@ -18,6 +18,7 @@ limitations under the License.
 #include <cinttypes>
 #include <set>
 #include <photon/thread/thread.h>
+#include <photon/common/utility.h>
 
 class RangeLock
 {
@@ -118,7 +119,7 @@ class RangeLock
         }
         uint64_t end() const
         {
-            return offset + length;
+            return photon::sat_add(offset, length);
         }
         bool operator < (const range_t& rhs) const
         {

Original file line number	Diff line number	Diff line change
`@@ -18,6 +18,7 @@ limitations under the License.`
`18`	`18`	`#include <cinttypes>`
`19`	`19`	`#include <set>`
`20`	`20`	`#include <photon/thread/thread.h>`
	`21`	`+#include <photon/common/utility.h>`
`21`	`22`
`22`	`23`	`class RangeLock`
`23`	`24`	`{`
`@@ -118,7 +119,7 @@ class RangeLock`
`118`	`119`	`}`
`119`	`120`	`uint64_t end() const`
`120`	`121`	`{`
`121`		`- return offset + length;`
	`122`	`+ return photon::sat_add(offset, length);`
`122`	`123`	`}`
`123`	`124`	`bool operator < (const range_t& rhs) const`
`124`	`125`	`{`