[llvm-bugs] [Bug 26672] New: [ms] Clang does not recognize "static_assert" keyword in C mode

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26672

            Bug ID: 26672
           Summary: [ms] Clang does not recognize "static_assert" keyword
                    in C mode
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: andrey.kuleshov at intel.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

!- "static_assert" keyword is not described in C standard, but Microsoft visual
compiler (cl) can compile C code with this keyword, it seems that it might be
added to clang in C mode as well -!

=========Environment============
Os: Windows 
Language: C
Version of clang: trunk

========How to reproduce========
$ cat test.c
static_assert(1, "in the ifdef");

$ clang -c test.c

========Error==================
>>>clang:
----
test.c:1:15: error: expected parameter declarator
static_assert(1, "in the ifdef");
              ^
test.c:1:15: error: expected ')'
test.c:1:14: note: to match this '('
static_assert(1, "in the ifdef");
             ^
test.c:1:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
static_assert(1, "in the ifdef");
^ 

>>>MSVC Version 18.00.31101 for x64:
----
no diagnostics

>>> Intel c/c++ compiler:
----
no diagnostics


=======================
Intel Software Engineer
Andrey Kuleshov

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