| Index: runtime/vm/intrinsifier_arm64.cc | 
| diff --git a/runtime/vm/intrinsifier_arm64.cc b/runtime/vm/intrinsifier_arm64.cc | 
| index 139608deb857f6fdd181a14da688a7127eb2c502..8cbb1ba0ab8cde69e820c58d5a88ce48fb3e939b 100644 | 
| --- a/runtime/vm/intrinsifier_arm64.cc | 
| +++ b/runtime/vm/intrinsifier_arm64.cc | 
| @@ -1843,7 +1843,7 @@ static void TryAllocateOnebyteString(Assembler* assembler, | 
| Label* failure) { | 
| const Register length_reg = R2; | 
| Label fail; | 
| - | 
| +  __ MaybeTraceAllocation(kOneByteStringCid, R0, kNoPP, failure); | 
| __ mov(R6, length_reg);  // Save the length register. | 
| // TODO(koda): Protect against negative length and overflow here. | 
| __ SmiUntag(length_reg); | 
|  |