rt: Remove CHECK_CLAIMS

Author: brson

src/rt/rust.cpp

@@ -67,11 +67,6 @@ command_line_args : public kernel_owned<command_line_args>
     }
 };
 
-// A global that indicates whether Rust typestate claim statements should be
-// executed Generated code will read this variable directly (I think).
-// FIXME (#2670): This belongs somewhere else
-int check_claims = 0;
-
 void* global_crate_map = NULL;
 
 /**
@@ -94,9 +89,6 @@ rust_start(uintptr_t main_fn, int argc, char **argv, void* crate_map) {
 
     update_log_settings(crate_map, env->logspec);
 
-    // Maybe turn on typestate claim checking
-    check_claims = env->check_claims;
-
     rust_kernel *kernel = new rust_kernel(env);
 
     // Create the main scheduler and the main task

src/rt/rust_env.cpp

@@ -10,7 +10,6 @@
 #define RUST_MIN_STACK "RUST_MIN_STACK"
 #define RUST_MAX_STACK "RUST_MAX_STACK"
 #define RUST_LOG "RUST_LOG"
-#define CHECK_CLAIMS "CHECK_CLAIMS"
 #define DETAILED_LEAKS "DETAILED_LEAKS"
 #define RUST_SEED "RUST_SEED"
 #define RUST_POISON_ON_FREE "RUST_POISON_ON_FREE"
@@ -114,7 +113,6 @@ load_env(int argc, char **argv) {
     env->min_stack_size = get_min_stk_size();
     env->max_stack_size = get_max_stk_size();
     env->logspec = copyenv(RUST_LOG);
-    env->check_claims = getenv(CHECK_CLAIMS) != NULL;
     env->detailed_leaks = getenv(DETAILED_LEAKS) != NULL;
     env->rust_seed = copyenv(RUST_SEED);
     env->poison_on_free = getenv(RUST_POISON_ON_FREE) != NULL;

src/rt/rust_env.h

@@ -9,7 +9,6 @@ struct rust_env {
     size_t min_stack_size;
     size_t max_stack_size;
     char* logspec;
-    bool check_claims;
     bool detailed_leaks;
     char* rust_seed;
     bool poison_on_free;

src/rt/rust_globals.h

@@ -69,10 +69,6 @@ extern "C" {
 #define FASTCALL
 #endif
 
-/* Controls whether claims are turned into checks */
-/* Variable name must be kept consistent with trans.rs */
-extern "C" int check_claims;
-
 #define CHECKED(call)                                               \
     {                                                               \
     int res = (call);                                               \