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-rw-r--r--crates/tinywasm/src/runtime/stack/call_stack.rs17
-rw-r--r--crates/tinywasm/tests/generated/2.0.csv2
2 files changed, 12 insertions, 7 deletions
diff --git a/crates/tinywasm/src/runtime/stack/call_stack.rs b/crates/tinywasm/src/runtime/stack/call_stack.rs
index 9ba6ad2..dbe420d 100644
--- a/crates/tinywasm/src/runtime/stack/call_stack.rs
+++ b/crates/tinywasm/src/runtime/stack/call_stack.rs
@@ -77,15 +77,20 @@ impl CallFrame {
// will increment it by 1 since we're changing the "current" instr_ptr
match break_to.ty {
BlockType::Loop => {
- // this is a loop, so we want to jump back to the start of the loop
- // We also want to push the params to the stack
- value_stack.break_to(break_to.stack_ptr, break_to.params);
-
self.instr_ptr = break_to.instr_ptr;
- // we also want to trim the label stack to the loop (but not including the loop)
- self.labels.truncate(self.labels.len() - break_to_relative as usize);
+ // check if we're breaking to the loop
+ if break_to_relative != 0 {
+ // this is a loop, so we want to jump back to the start of the loop
+ // We also want to push the params to the stack
+ value_stack.break_to(break_to.stack_ptr, break_to.params);
+
+ // we also want to trim the label stack to the loop (but not including the loop)
+ self.labels.truncate(self.labels.len() - break_to_relative as usize);
+ return Some(());
+ }
}
+
BlockType::Block | BlockType::If | BlockType::Else => {
// this is a block, so we want to jump to the next instruction after the block ends
// We also want to push the block's results to the stack
diff --git a/crates/tinywasm/tests/generated/2.0.csv b/crates/tinywasm/tests/generated/2.0.csv
index 0d233ee..b5ea4cc 100644
--- a/crates/tinywasm/tests/generated/2.0.csv
+++ b/crates/tinywasm/tests/generated/2.0.csv
@@ -1,2 +1,2 @@
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