propogate changes to use anyhow::Error instead of Box<dyn Error...>

crates/wasmtime/src/externals.rs

@@ -551,7 +551,7 @@ impl Table {
         let init = init.into_table_element(store, ty)?;
         let table = self.wasmtime_table(store);
         unsafe {
-            match (*table).grow(delta, init, store) {
+            match (*table).grow(delta, init, store)? {
                 Some(size) => {
                     let vm = (*table).vmtable();
                     *store[self.0].definition = vm;

crates/wasmtime/src/func.rs

@@ -4,8 +4,6 @@ use crate::{
     StoreContext, StoreContextMut, Trap, Val, ValRaw, ValType,
 };
 use anyhow::{bail, Context as _, Result};
-use std::error::Error;
-use std::fmt;
 use std::future::Future;
 use std::mem;
 use std::panic::{self, AssertUnwindSafe};
@@ -1784,25 +1782,6 @@ impl<T> AsContextMut for Caller<'_, T> {
     }
 }
 
-fn cross_store_trap() -> Box<dyn Error + Send + Sync> {
-    #[derive(Debug)]
-    struct CrossStoreError;
-
-    impl Error for CrossStoreError {}
-
-    impl fmt::Display for CrossStoreError {
-        fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-            write!(
-                f,
-                "host function attempted to return cross-`Store` \
-                 value to Wasm",
-            )
-        }
-    }
-
-    Box::new(CrossStoreError)
-}
-
 macro_rules! impl_into_func {
     ($num:tt $($args:ident)*) => {
         // Implement for functions without a leading `&Caller` parameter,
@@ -1852,7 +1831,7 @@ macro_rules! impl_into_func {
                 {
                     enum CallResult<U> {
                         Ok(U),
-                        Trap(Box<dyn Error + Send + Sync>),
+                        Trap(anyhow::Error),
                         Panic(Box<dyn std::any::Any + Send>),
                     }
 
@@ -1901,7 +1880,9 @@ macro_rules! impl_into_func {
                                 // can't assume it returned a value that is
                                 // compatible with this store.
                                 if !ret.compatible_with_store(caller.store.0) {
-                                    CallResult::Trap(cross_store_trap())
+                                    CallResult::Trap(anyhow::anyhow!(
+                "host function attempted to return cross-`Store` value to Wasm"
+                                            ))
                                 } else {
                                     match ret.into_abi_for_ret(caller.store.0, retptr) {
                                         Ok(val) => CallResult::Ok(val),

crates/wasmtime/src/memory.rs

@@ -479,7 +479,7 @@ impl Memory {
         let store = store.as_context_mut().0;
         let mem = self.wasmtime_memory(store);
         unsafe {
-            match (*mem).grow(delta, store) {
+            match (*mem).grow(delta, store)? {
                 Some(size) => {
                     let vm = (*mem).vmmemory();
                     *store[self.0].definition = vm;

crates/wasmtime/src/store.rs

@@ -81,7 +81,6 @@ use anyhow::{bail, Result};
 use std::cell::UnsafeCell;
 use std::collections::HashMap;
 use std::convert::TryFrom;
-use std::error::Error;
 use std::fmt;
 use std::future::Future;
 use std::marker;
@@ -1527,7 +1526,12 @@ unsafe impl<T> wasmtime_runtime::Store for StoreInner<T> {
         (&mut inner.externref_activations_table, &inner.modules)
     }
 
-    fn memory_growing(&mut self, current: usize, desired: usize, maximum: Option<usize>) -> bool {
+    fn memory_growing(
+        &mut self,
+        current: usize,
+        desired: usize,
+        maximum: Option<usize>,
+    ) -> Result<bool, anyhow::Error> {
         // Need to borrow async_cx before the mut borrow of the limiter.
         // self.async_cx() panicks when used with a non-async store, so
         // wrap this in an option.
@@ -1539,20 +1543,19 @@ unsafe impl<T> wasmtime_runtime::Store for StoreInner<T> {
         };
         match self.limiter {
             Some(ResourceLimiterInner::Sync(ref mut limiter)) => {
-                limiter(&mut self.data).memory_growing(current, desired, maximum)
+                Ok(limiter(&mut self.data).memory_growing(current, desired, maximum))
             }
             #[cfg(feature = "async")]
             Some(ResourceLimiterInner::Async(ref mut limiter)) => unsafe {
-                async_cx
+                Ok(async_cx
                     .expect("ResourceLimiterAsync requires async Store")
                     .block_on(
                         limiter(&mut self.data)
                             .memory_growing(current, desired, maximum)
                             .as_mut(),
-                    )
-                    .expect("FIXME idk how to deal with a trap here!")
+                    )?)
             },
-            None => true,
+            None => Ok(true),
         }
     }
 
@@ -1569,7 +1572,12 @@ unsafe impl<T> wasmtime_runtime::Store for StoreInner<T> {
         }
     }
 
-    fn table_growing(&mut self, current: u32, desired: u32, maximum: Option<u32>) -> bool {
+    fn table_growing(
+        &mut self,
+        current: u32,
+        desired: u32,
+        maximum: Option<u32>,
+    ) -> Result<bool, anyhow::Error> {
         // Need to borrow async_cx before the mut borrow of the limiter.
         // self.async_cx() panicks when used with a non-async store, so
         // wrap this in an option.
@@ -1582,33 +1590,32 @@ unsafe impl<T> wasmtime_runtime::Store for StoreInner<T> {
 
         match self.limiter {
             Some(ResourceLimiterInner::Sync(ref mut limiter)) => {
-                limiter(&mut self.data).table_growing(current, desired, maximum)
+                Ok(limiter(&mut self.data).table_growing(current, desired, maximum))
             }
             #[cfg(feature = "async")]
             Some(ResourceLimiterInner::Async(ref mut limiter)) => unsafe {
-                async_cx
+                Ok(async_cx
                     .expect("ResourceLimiterAsync requires async Store")
                     .block_on(
                         limiter(&mut self.data)
                             .table_growing(current, desired, maximum)
                             .as_mut(),
-                    )
-                    .expect("FIXME idk how to deal with a trap here!")
+                    )?)
             },
-            None => true,
+            None => Ok(true),
         }
     }
 
-    fn out_of_gas(&mut self) -> Result<(), Box<dyn Error + Send + Sync>> {
+    fn out_of_gas(&mut self) -> Result<(), anyhow::Error> {
         return match &mut self.out_of_gas_behavior {
-            OutOfGas::Trap => Err(Box::new(OutOfGasError)),
+            OutOfGas::Trap => Err(anyhow::Error::new(OutOfGasError)),
             #[cfg(feature = "async")]
             OutOfGas::InjectFuel {
                 injection_count,
                 fuel_to_inject,
             } => {
                 if *injection_count == 0 {
-                    return Err(Box::new(OutOfGasError));
+                    return Err(anyhow::Error::new(OutOfGasError));
                 }
                 *injection_count -= 1;
                 let fuel = *fuel_to_inject;

crates/wasmtime/src/trampoline/func.rs

@@ -57,7 +57,7 @@ unsafe extern "C" fn stub_fn<F>(
         // call-site, which gets unwrapped in `Trap::from_runtime` later on as we
         // convert from the internal `Trap` type to our own `Trap` type in this
         // crate.
-        Ok(Err(trap)) => wasmtime_runtime::raise_user_trap(Box::new(trap)),
+        Ok(Err(trap)) => wasmtime_runtime::raise_user_trap(trap.into()),
 
         // And finally if the imported function panicked, then we trigger the
         // form of unwinding that's safe to jump over wasm code on all