GH-49617: [C++][CI] Validate all batches in IPC file fuzzer

pitrou · pitrou · commit 7a018e2ba32b · 2026-03-30T14:37:50.000+02:00
When using the IPC stream reader for differential fuzzing against the IPC file reader, ensure we validate batches because otherwise we might be doing invalid memory accesses down the road.
diff --git a/cpp/src/arrow/ipc/reader.cc b/cpp/src/arrow/ipc/reader.cc
@@ -2807,6 +2807,7 @@ Status FuzzIpcFile(const uint8_t* data, int64_t size) {
         // EOS
         break;
       }
+      RETURN_NOT_OK(ValidateFuzzBatch(batch));
       batches.push_back(batch);
     }
     return IpcReadResult{batch_reader->schema(), batches};
diff --git a/testing b/testing
@@ -1 +1 @@
-Subproject commit afcdeba44006e05b2b09c0971373b36bb263e0aa
+Subproject commit 015d80bd2012a0629b8b269bb97dec4e96f28b6b

Original file line number	Diff line number	Diff line change
`@@ -2807,6 +2807,7 @@ Status FuzzIpcFile(const uint8_t* data, int64_t size) {`
`2807`	`2807`	`// EOS`
`2808`	`2808`	`break;`
`2809`	`2809`	`}`
	`2810`	`+ RETURN_NOT_OK(ValidateFuzzBatch(batch));`
`2810`	`2811`	`batches.push_back(batch);`
`2811`	`2812`	`}`
`2812`	`2813`	`return IpcReadResult{batch_reader->schema(), batches};`