[Issue 22880] New: importC: __restrict restrict __restrict__

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22880

          Issue ID: 22880
           Summary: importC: __restrict restrict __restrict__
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: trikkuz at gmail.com

It seems that both gcc and clang on linux use __restrict as keyword.

gcc -c test.c 
cat test.c
----
int * restrict a;
int * __restrict b;
int * __restrict__ c;
----

gcc -std=c11 -E test.c > test.i
cat test.i
---
# 0 "test.c"
# 0 "<built-in>"
# 0 "<command-line>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 0 "<command-line>" 2
# 1 "test.c"
int * restrict a;
int * __restrict b;
int * __restrict__ c;
---

But:

dmd test.i

---
test.c(2): Error: missing comma or semicolon after declaration of `__restrict`,
found `b` instead
test.c(3): Error: missing comma or semicolon after declaration of
`__restrict__`, found `c` instead
---

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