https://bugs.llvm.org/show_bug.cgi?id=35940

            Bug ID: 35940
           Summary: Reference to packed member isn't checked
           Product: new-bugs
           Version: 4.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedb...@nondot.org
          Reporter: hjl.to...@gmail.com
                CC: llvm-bugs@lists.llvm.org

[hjl@gnu-tools-1 pr51628]$ cat r.ii 
struct pair_t {
    char c;
    __int128_t i;
} __attribute__((packed));

extern void bar (__int128_t &);
extern struct pair_t p;
__int128_t &
foo (void)
{
  bar (p.i);
  return p.i;
}
[hjl@gnu-tools-1 pr51628]$ clang -S r.ii
[hjl@gnu-tools-1 pr51628]$

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