[llvm-bugs] [Bug 51319] New: Incomplete array type with internal linkage: missing diagnostics under -pedantic

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=51319

            Bug ID: 51319
           Summary: Incomplete array type with internal linkage: missing
                    diagnostics under -pedantic
           Product: clang
           Version: 12.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C
          Assignee: unassignedclangbugs at nondot.org
          Reporter: pavel.morozkin at gmail.com
                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

Sample code (t0.c):

static int arr[ ];

int main( void )
{
        return arr[ 0 ];
}

static int arr[ ] = { 0 };

Invocation: clang t0.c -std=c11 -Wall -Wextra -pedantic

Expected diagnostics: t0.c:1:12: error: array size missing in ‘arr’

Actual diagnostics: <nothing>

Tool version: 12.0.0

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