starknet_os: os resources test - library call

crates/apollo_starknet_os_program/src/cairo/starkware/starknet/core/os/constants.cairo

@@ -72,7 +72,7 @@ const ALLOWED_VIRTUAL_OS_PROGRAM_HASHES_1 = (
     0x06ecb73d21c7d98ddd4148f5bcd91cc2747c65364245fbf32a63b05cca1685c2
 );
 const ALLOWED_VIRTUAL_OS_PROGRAM_HASHES_2 = (
-    0x059a0052ae80a978ca71126c9774a17c67c19f79b14bb9d1ea96fb77dc6032d8
+    0x028619dbc9767792fb536aaba7a2d55f70faadf808c95ec66b956d33fdee1bc0
 );
 const ALLOWED_VIRTUAL_OS_PROGRAM_HASHES_LEN = 3;
 
@@ -113,7 +113,7 @@ const DEPLOY_CALLDATA_FACTOR_GAS_COST = 4850;
 const GET_BLOCK_HASH_GAS_COST = 10840;
 const GET_CLASS_HASH_AT_GAS_COST = 10000;
 const GET_EXECUTION_INFO_GAS_COST = 12640;
-const LIBRARY_CALL_GAS_COST = 89160;
+const LIBRARY_CALL_GAS_COST = 88660;
 const REPLACE_CLASS_GAS_COST = 10670;
 // TODO(Yoni, 1/1/2026): take into account Patricia updates and dict squash.
 const STORAGE_READ_GAS_COST = 24070;

crates/apollo_starknet_os_program/src/program_hash.json

@@ -1,6 +1,6 @@
 {
-  "os": "0x47f5b47e73f1736037ea946704c57d9072f26d12beee01a55d947d87f779436",
-  "virtual_os": "0x59a0052ae80a978ca71126c9774a17c67c19f79b14bb9d1ea96fb77dc6032d8",
+  "os": "0x7b762f60dc1f9ecb199322522749de4e926c1eee33454764ae8974744ef0c5a",
+  "virtual_os": "0x28619dbc9767792fb536aaba7a2d55f70faadf808c95ec66b956d33fdee1bc0",
   "aggregator": "0x700786d51b3854af43d8e12180380bda3029be6c1767e007858de6ca2edac40",
   "aggregator_with_prefix": "0xe08d300e3f5996e43d6d7cc5a20068e0e58cf1309089f2348317ac580f6c1f"
 }

crates/blockifier/resources/blockifier_versioned_constants_0_14_4.json

@@ -128,7 +128,7 @@
         "allowed_virtual_os_program_hashes": [
             "0x3e98c2d7703b03a7edb73ed7f075f97f1dcbaa8f717cdf6e1a57bf058265473",
             "0x6ecb73d21c7d98ddd4148f5bcd91cc2747c65364245fbf32a63b05cca1685c2",
-            "0x59a0052ae80a978ca71126c9774a17c67c19f79b14bb9d1ea96fb77dc6032d8"
+            "0x28619dbc9767792fb536aaba7a2d55f70faadf808c95ec66b956d33fdee1bc0"
         ],
         "constructor_entry_point_selector": "0x28ffe4ff0f226a9107253e17a904099aa4f63a02a5621de0576e5aa71bc5194",
         "default_entry_point_selector": "0x0",
@@ -346,7 +346,7 @@
                 }
             },
             "LibraryCall": {
-                "n_steps": 879,
+                "n_steps": 874,
                 "n_memory_holes": 0,
                 "builtin_instance_counter": {
                     "range_check_builtin": 18

crates/blockifier/resources/versioned_constants_diff_regression/0.14.3_0.14.4.txt

@@ -1,2 +1,3 @@
-+ /os_constants/allowed_virtual_os_program_hashes/2: "0x59a0052ae80a978ca71126c9774a17c67c19f79b14bb9d1ea96fb77dc6032d8"
++ /os_constants/allowed_virtual_os_program_hashes/2: "0x28619dbc9767792fb536aaba7a2d55f70faadf808c95ec66b956d33fdee1bc0"
 ~ /os_resources/execute_syscalls/CallContract/n_steps: 901
+~ /os_resources/execute_syscalls/LibraryCall/n_steps: 874

crates/blockifier/src/execution/syscalls/syscall_tests/library_call.rs

@@ -64,7 +64,7 @@ fn test_library_call(runnable_version: RunnableCairo1) {
             l2_to_l1_messages: [],
             cairo_native: false,
             failed: false,
-            gas_consumed: 189170,
+            gas_consumed: 188670,
         }
     "#]]
     .assert_debug_eq(&execution);
@@ -108,7 +108,7 @@ fn test_library_call_assert_fails(runnable_version: RunnableCairo1) {
             l2_to_l1_messages: [],
             cairo_native: false,
             failed: true,
-            gas_consumed: 109750,
+            gas_consumed: 109250,
         }
     "#]]
     .assert_debug_eq(&call_info.execution);
@@ -153,7 +153,7 @@ fn test_nested_library_call(runnable_version: RunnableCairo1) {
         ..trivial_external_entry_point_new(test_contract)
     };
     let expected_nested_initial_gas = expect![[r#"
-        9999085250
+        9999086250
     "#]];
     let nested_storage_entry_point = CallEntryPoint {
         entry_point_selector: inner_entry_point_selector,
@@ -165,7 +165,7 @@ fn test_nested_library_call(runnable_version: RunnableCairo1) {
         ..trivial_external_entry_point_new(test_contract)
     };
     let expected_library_initial_gas = expect![[r#"
-        9999185000
+        9999185500
     "#]];
     let library_entry_point = CallEntryPoint {
         entry_point_selector: outer_entry_point_selector,
@@ -183,7 +183,7 @@ fn test_nested_library_call(runnable_version: RunnableCairo1) {
         ..trivial_external_entry_point_new(test_contract)
     };
     let expected_storage_initial_gas = expect![[r#"
-        9998916670
+        9998918170
     "#]];
     let storage_entry_point = CallEntryPoint {
         calldata: calldata![felt!(key), felt!(value)],
@@ -223,7 +223,7 @@ fn test_nested_library_call(runnable_version: RunnableCairo1) {
     };
 
     let expected_library_call_gas_consumed = expect![[r#"
-        189170
+        188670
     "#]];
     let library_call_info = CallInfo {
         call: library_entry_point,
@@ -269,7 +269,7 @@ fn test_nested_library_call(runnable_version: RunnableCairo1) {
     };
 
     let expected_main_gas_consumed = expect![[r#"
-        465190
+        463690
     "#]];
     let expected_call_info = CallInfo {
         call: main_entry_point.clone(),

crates/blockifier_test_utils/resources/feature_contracts/cairo1/os_resources_test_contract.cairo

@@ -2,7 +2,7 @@
 #[starknet::contract(account)]
 mod OsResourcesTestContract {
     use starknet::info::SyscallResultTrait;
-    use starknet::syscalls::call_contract_syscall;
+    use starknet::syscalls::{call_contract_syscall, library_call_syscall};
     use starknet::{ClassHash, ContractAddress};
 
     const STABLE_EXTERNAL_ENTRY_POINT_SELECTOR: felt252 = selector!("external");
@@ -34,5 +34,11 @@ mod OsResourcesTestContract {
             stable_address, STABLE_EXTERNAL_ENTRY_POINT_SELECTOR, array![0].span(),
         )
             .unwrap_syscall();
+
+        // library_call syscall — calls empty_function on stable class hash.
+        library_call_syscall(
+            stable_class_hash, STABLE_EXTERNAL_ENTRY_POINT_SELECTOR, array![0].span(),
+        )
+            .unwrap_syscall();
     }
 }

crates/starknet_os_flow_tests/src/os_resources_test.rs

@@ -36,7 +36,7 @@ use crate::test_manager::{TestBuilder, TestBuilderConfig, FUNDED_ACCOUNT_ADDRESS
 use crate::tests::NON_TRIVIAL_RESOURCE_BOUNDS;
 
 // TODO(Dori): Delete this, or at least reduce it to a minimal set of unmeasurable syscalls.
-const UNMEASURABLE_SYSCALLS: [Selector; 35] = [
+const UNMEASURABLE_SYSCALLS: [Selector; 34] = [
     Selector::DelegateCall,
     Selector::DelegateL1Handler,
     Selector::Deploy,
@@ -55,7 +55,6 @@ const UNMEASURABLE_SYSCALLS: [Selector; 35] = [
     Selector::KeccakRound,
     Selector::Sha256ProcessBlock,
     Selector::Sha512ProcessBlock,
-    Selector::LibraryCall,
     Selector::LibraryCallL1Handler,
     Selector::MetaTxV0,
     Selector::ReplaceClass,