[llvm-bugs] [Bug 30963] New: clang-cl does not match MSVC in converting string literal to void*

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=30963

            Bug ID: 30963
           Summary: clang-cl does not match MSVC in converting string
                    literal to void*
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: dmajor at mozilla.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

The conversion from string literal to char* is accepted, with a warning, but
conversion to void* is rejected.

-------------------------------------------------

$ cat foo.cpp
void c(char* ptr) {}
void v(void* ptr) {}

int main()
{
  c("hello");
  v("world");
  return 0;
}

-------------------------------------------------

$ cl foo.cpp
Microsoft (R) C/C++ Optimizing Compiler Version 19.00.24215.1 for x86
Copyright (C) Microsoft Corporation.  All rights reserved.

foo.cpp
Microsoft (R) Incremental Linker Version 14.00.24215.1
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:foo.exe
foo.obj

-------------------------------------------------

$ clang-cl -fms-compatibility-version=19.00.24215.1 foo.cpp
foo.cpp(6,5):  warning: ISO C++11 does not allow conversion from string literal
to 'char *'
      [-Wwritable-strings]
  c("hello");
    ^
foo.cpp(7,3):  error: no matching function for call to 'v'
  v("world");
  ^
foo.cpp(2,6):  note: candidate function not viable: no known conversion from
      'const char [6]' to 'void *' for 1st argument
void v(void* ptr) {}
     ^
1 warning and 1 error generated.

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