[llvm-bugs] [Bug 47710] New: Clang :: Sema/offsetof-64.c FAILs on 64-bit Sparc

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47710

            Bug ID: 47710
           Summary: Clang :: Sema/offsetof-64.c FAILs on 64-bit Sparc
           Product: libraries
           Version: trunk
          Hardware: Sun
                OS: All
            Status: NEW
          Keywords: miscompilation, regression
          Severity: normal
          Priority: P
         Component: Backend: Sparc
          Assignee: unassignedbugs at nondot.org
          Reporter: ro at gcc.gnu.org
                CC: llvm-bugs at lists.llvm.org

The Clang :: Sema/offsetof-64.c test FAILs on 64-bit Sparc (seen on both
sparcv9-sun-solaris2.11 and sparc64-unknown-linux-gnu):

Assertion failed: (Size == 0 || EltInfo.Width <= (uint64_t)(-1) / Size) &&
"Overflow in array type bit size evaluation", file
/vol/llvm/src/llvm-project/dist/clang/lib/AST/ASTContext.cpp, line 1914

However, the same problem can be seen in a much reduced testcase (attached).

Compile with

$ clang -m64 -O3 -o o64 o64.c o64d.c && ./o64
Assertion failed: Width <= (uint64_t)(-1) / Size, file o64.c, line 7, function
main
Abort (core dumped)

The test works with gcc and clang-9, while clang-10 and 11 show the same error.

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20201002/e0439193/attachment.html>