https://issues.dlang.org/show_bug.cgi?id=23757

          Issue ID: 23757
           Summary: ImportC: fail to import malloc
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: ryuukk.dev@gmail.com

DMD32 D Compiler v2.102.1

The following code:

```
import json;

unittest
{
        json_settings settings;
    settings.settings = json_enable_comments;
    char[256] error = 0;
    string a = "{ \"a\": 1 }";
    json_value * value = json_parse_ex(&settings, a.ptr, a.length, error.ptr);
}
```

Using c code: https://github.com/json-parser/json-parser

Using developer command line prompt

``dmd -unittest -main -betterC -m64 -run package.d``



I get the following error:

```
C:\dev\kdom\better_d\rt\json>dmd -unittest -main -betterC -m64 -run package.d
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(58): Error:
extended-decl-modifier expected
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(58): Error: no type for
declarator before `)`
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(65): Error:
extended-decl-modifier expected
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(65): Error: no type for
declarator before `)`
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(94): Error:
extended-decl-modifier expected
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(94): Error: no type for
declarator before `)`
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(100): Error:
extended-decl-modifier expected
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(100): Error: no type for
declarator before `)`
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(118): Error:
extended-decl-modifier expected
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(118): Error: no type for
declarator before `)`
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(125): Error:
extended-decl-modifier expected
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(125): Error: no type for
declarator before `)`
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(132): Error:
extended-decl-modifier expected
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(132): Error: no type for
declarator before `)`
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(140): Error:
extended-decl-modifier expected
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(140): Error: no type for
declarator before `)`
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(153): Error:
extended-decl-modifier expected
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(153): Error: no type for
declarator before `)`
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(160): Error:
extended-decl-modifier expected
C:\Program Files (x86)\Windows
Kits\10\include\10.0.19041.0\ucrt\corecrt_malloc.h(160): Error: no type for
declarator before `)`
```

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