[llvm-bugs] [Bug 42222] New: ‘inner’ declared ‘static’ in ‘constexpr’ context

via llvm-bugs llvm-bugs at lists.llvm.org
Mon Jun 10 22:25:59 PDT 2019


            Bug ID: 42222
           Summary: ‘inner’ declared ‘static’ in ‘constexpr’ context
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: zhonghao at pku.org.cn
                CC: blitzrakete at gmail.com, dgregor at apple.com,
                    erik.pilkington at gmail.com, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk

My clang is 9.0.0, and the code is:

struct test { const int *addr; };

const test* setup()
 static constexpr test atest =
 ({ static const int inner = 123; &inner; })

 return &atest;

int main(){}

clang accepts it, but icc and gcc reject it. 


source>: In function 'const test* setup()':

<source>:7:22: error: 'inner' declared 'static' in 'constexpr' context

    7 |  ({ static const int inner = 123; &inner; })

      |                      ^~~~~

Compiler returned: 1


source>(7): error: expression must have a constant value

   ({ static const int inner = 123; &inner; })


compilation aborted for <source> (code 2)

Compiler returned: 2

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