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Regression with generated template parameters. #1113

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emilio opened this issue Oct 28, 2017 · 4 comments
Closed

Regression with generated template parameters. #1113

emilio opened this issue Oct 28, 2017 · 4 comments
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@emilio
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emilio commented Oct 28, 2017

From 0.29 to 0.31, the following code corresponding to nsBaseHashTable has changed from:

    pub struct nsBaseHashtable_EntryPtr<KeyClass, DataType> {
        pub mEntry: *mut root::nsBaseHashtable_EntryType<KeyClass, DataType>,
        pub mExistingEntry: bool,
        pub _phantom_0: ::std::marker::PhantomData<::std::cell::UnsafeCell<KeyClass>>,
        pub _phantom_1: ::std::marker::PhantomData<::std::cell::UnsafeCell<DataType>>,
    }

To:

pub struct nsBaseHashtable_EntryPtr < KeyClass , DataType > {
    pub mEntry : * mut root :: nsBaseHashtable_EntryType < KeyClass , DataType > < KeyClass , DataType > ,
    pub mExistingEntry : bool ,
    // ....
}

Trying to find a test-case now.

@emilio
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emilio commented Oct 28, 2017

Test-case:

template<class K, class V>
class Entry : public K
{
  V mData;
};

template<typename K, typename V>
class nsBaseHashtable {
  typedef Entry<K, V> EntryType;

  struct EntryPtr {
  private:
    EntryType& mEntry;
    bool mExistingEntry;
  };
};

@emilio
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emilio commented Oct 28, 2017

Bisect says that 61743aa is to blame.

@emilio
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emilio commented Oct 28, 2017

Unfortunately that is not precisely a minimal commit...

@emilio emilio self-assigned this Oct 28, 2017
@emilio
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emilio commented Oct 28, 2017

I got this one though.

emilio added a commit to emilio/rust-bindgen that referenced this issue Oct 28, 2017
bors-servo pushed a commit that referenced this issue Oct 28, 2017
ir: References have no implicit template parameters.

Fixes #1113.
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