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compiler: limit level of pointer-to-pointer-to-... types

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This commit is contained in:
Damian Gryski
2023-06-09 01:21:41 -07:00
committed by Ron Evans
parent f5f4751088
commit 0212f0c008
1 changed files with 4 additions and 0 deletions
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compiler/interface.go
+4
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@@ -133,6 +133,10 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
if _, ok := typ.Elem().(*types.Pointer); ok { if _, ok := typ.Elem().(*types.Pointer); ok {
// For a pointer to a pointer, we just increase the pointer by 1 // For a pointer to a pointer, we just increase the pointer by 1
ptr := c.getTypeCode(typ.Elem()) ptr := c.getTypeCode(typ.Elem())
// if the type is already *****T or higher, we can't make it.
if typstr := typ.String(); strings.HasPrefix(typstr, "*****") {
c.addError(token.NoPos, fmt.Sprintf("too many levels of pointers for typecode: %s", typstr))
}
return llvm.ConstGEP(c.ctx.Int8Type(), ptr, []llvm.Value{ return llvm.ConstGEP(c.ctx.Int8Type(), ptr, []llvm.Value{
llvm.ConstInt(llvm.Int32Type(), 1, false), llvm.ConstInt(llvm.Int32Type(), 1, false),
}) })