Fix -Wsign-compare warning

rjogrady · rjogrady · commit 27f34a580be4 · 2023-07-12T11:12:48.000-07:00
PiperOrigin-RevId: 547529709
diff --git a/snappy.cc b/snappy.cc
@@ -1289,7 +1289,7 @@ std::pair<const uint8_t*, ptrdiff_t> DecompressBranchless(
         DeferMemCopy(&deferred_src, &deferred_length, from, len);
       }
     } while (ip < ip_limit_min_slop &&
-             (op + deferred_length) < op_limit_min_slop);
+             static_cast<ptrdiff_t>(op + deferred_length) < op_limit_min_slop);
   exit:
     ip--;
     assert(ip <= ip_limit);

Original file line number	Diff line number	Diff line change
`@@ -1289,7 +1289,7 @@ std::pair<const uint8_t*, ptrdiff_t> DecompressBranchless(`
`1289`	`1289`	`DeferMemCopy(&deferred_src, &deferred_length, from, len);`
`1290`	`1290`	`}`
`1291`	`1291`	`} while (ip < ip_limit_min_slop &&`
`1292`		`- (op + deferred_length) < op_limit_min_slop);`
	`1292`	`+ static_cast<ptrdiff_t>(op + deferred_length) < op_limit_min_slop);`
`1293`	`1293`	`exit:`
`1294`	`1294`	`ip--;`
`1295`	`1295`	`assert(ip <= ip_limit);`