wasm: Initial behavior tests succeeding

- Correctly load slice value on stack
- Implement WrapErrorUnionErr and payload
- Implement trunc, fix sliceLen and write undefined
- Implement slice as return type and argument

Note: This also fixes a memory leak for inferred error sets, and for usingnamespace

1 files changed, 9 insertions, 6 deletions

diff --git a/src/link/Wasm.zig b/src/link/Wasm.zig
index 367f3376f0..12afc7164c 100644
--- a/src/link/Wasm.zig
+++ b/src/link/Wasm.zig
@@ -162,9 +162,8 @@ pub fn deinit(self: *Wasm) void {
         decl.link.wasm.deinit(self.base.allocator);
     }
 
-    for (self.func_types.items) |func_type| {
-        self.base.allocator.free(func_type.params);
-        self.base.allocator.free(func_type.returns);
+    for (self.func_types.items) |*func_type| {
+        func_type.deinit(self.base.allocator);
     }
     for (self.segment_info.items) |segment_info| {
         self.base.allocator.free(segment_info.name);
@@ -278,7 +277,7 @@ pub fn updateDecl(self: *Wasm, module: *Module, decl: *Module.Decl) !void {
     defer codegen.deinit();
 
     // generate the 'code' section for the function declaration
-    const result = codegen.genDecl(decl.ty, decl.val) catch |err| switch (err) {
+    const result = codegen.genDecl() catch |err| switch (err) {
         error.CodegenFail => {
             decl.analysis = .codegen_failure;
             try module.failed_decls.put(module.gpa, decl, codegen.err_msg);
@@ -298,6 +297,7 @@ fn finishUpdateDecl(self: *Wasm, decl: *Module.Decl, result: CodeGen.Result, cod
 
     if (decl.isExtern()) {
         try self.addOrUpdateImport(decl);
+        return;
     }
 
     if (code.len == 0) return;
@@ -574,7 +574,6 @@ fn resetState(self: *Wasm) void {
     self.segments.clearRetainingCapacity();
     self.segment_info.clearRetainingCapacity();
     self.data_segments.clearRetainingCapacity();
-    self.function_table.clearRetainingCapacity();
     self.atoms.clearRetainingCapacity();
     self.code_section_index = null;
 }
@@ -684,12 +683,16 @@ pub fn flushModule(self: *Wasm, comp: *Compilation) !void {
         );
     }
 
+    // Table section
     if (self.function_table.count() > 0) {
         const header_offset = try reserveVecSectionHeader(file);
         const writer = file.writer();
 
         try leb.writeULEB128(writer, wasm.reftype(.funcref));
-        try emitLimits(writer, .{ .min = 1, .max = null });
+        try emitLimits(writer, .{
+            .min = @intCast(u32, self.function_table.count()),
+            .max = null,
+        });
 
         try writeVecSectionHeader(
             file,