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Can compare extern objects equal/not equal? #3363

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apinski-cavium opened this issue May 26, 2022 · 1 comment · Fixed by #3834
Closed

Can compare extern objects equal/not equal? #3363

apinski-cavium opened this issue May 26, 2022 · 1 comment · Fixed by #3834
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bug This behavior is unintended and should be fixed. fixed This topic is considered to be fixed. question This is a topic requesting clarification.

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@apinski-cavium
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I accidently found this while testing something related to annotations.
Take:

extern e
{
  e();
}
e() t;
e() t1;

@myat[t == t1] typedef int b1;

As far as I Know you cannot compare extern objects with == or !=. But p4c accepts it.
@mihaibudiu mihaibudiu added the question This is a topic requesting clarification. label Aug 18, 2022
@mihaibudiu
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This should be disallowed.

@mihaibudiu mihaibudiu added bug This behavior is unintended and should be fixed. fixed This topic is considered to be fixed. labels Jan 10, 2023
@mihaibudiu mihaibudiu mentioned this issue Jan 10, 2023
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bug This behavior is unintended and should be fixed. fixed This topic is considered to be fixed. question This is a topic requesting clarification.
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Cannot compare externs mihaibudiu/p4c-clone
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@apinski-cavium @mihaibudiu