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From: "alexander.grund@tu-dresden.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/100703] __vector_pair and __vector_quad cannot be passed
 by reference
Date: Thu, 20 May 2021 13:05:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100703

--- Comment #1 from Alexander Grund <alexander.grund@tu-dresden.de> ---
It goes further: Even the usual conversion rules for pointer types don't ap=
ply:

void foo(__vector_pair*){}
void bar(const __vector_pair*){}
int main(){
  __vector_pair p;
  foo(p); // works
  bar(p); // fails
}=