Fix C codegen when accessing a casted record pointer

edubart · Sep 30, 2020 · 6f7ef7b · 6f7ef7b
1 parent 2e07d1c
commit 6f7ef7b
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Showing 2 changed files with 11 additions and 0 deletions.
diff --git a/nelua/cemitter.lua b/nelua/cemitter.lua
@@ -175,8 +175,12 @@ function CEmitter:add_val2type(type, val, valtype, checkcast)
         self:add_builtin('nelua_narrow_cast_', type, valtype)
         self:add('(', val, ')')
       else
+        local innertype = type.is_pointer and type.subtype or type
+        local surround = innertype.is_record or innertype.is_array
+        if surround then self:add('(') end
         self:add_ctypecast(type)
         self:add(val)
+        if surround then self:add(')') end
       end
     end
   else

diff --git a/spec/05-cgenerator_spec.lua b/spec/05-cgenerator_spec.lua
@@ -88,6 +88,13 @@ it("type cast", function()
   n = 0.0;
   f = 0.0f;
   r = (R){0};]])
+
+  assert.generate_c([[
+    local recA = @record{a: integer}
+    local recB = @record{b: integer}
+    local x: recA
+    local y = ((@*recB)(&x).b)
+  ]], "y = ((recB_ptr)(&x))->b;")
 end)
 
 it("string", function()