Visual Studio Code、gcc、Mac 的 C/C++ 扩展 : "variable uint32_t is not a type name"

Question

我已经开始在我的嵌入式 C 项目中使用 VSC，在 Mac 上使用 gcc for ARM。在 c_cpp_properties.json 中设置包含路径，我的大部分#includes现在正在工作。然而，像这样的一行:

uint32_t m_ttff_seconds = 0;

产生红色波浪下划线和错误:

variable uint32_t is not a type name

有问题的源文件包括 stdint:

#include <stdint.h>

和 includePath包括:

"${HOME}/dev/gcc-arm-none-eabi-4_9-2015q3/lib/gcc/arm-none-eabi/4.9.3/include"

和:

"intelliSenseMode": "clang-x64"

(唯一的其他选项是 msvc-x64 )。

当我使用 make 和 gcc 时，代码库编译得很好。如何在 uint32_t 中显示 C/C++ 扩展是吗？

编辑:

stdint.h看起来像这样:

#ifndef _GCC_WRAP_STDINT_H
#if __STDC_HOSTED__
# if defined __cplusplus && __cplusplus >= 201103L
#  undef __STDC_LIMIT_MACROS
#  define __STDC_LIMIT_MACROS
#  undef __STDC_CONSTANT_MACROS
#  define __STDC_CONSTANT_MACROS
# endif
# include_next <stdint.h>
#else
# include "stdint-gcc.h"
#endif
#define _GCC_WRAP_STDINT_H
#endif

和stdint-gcc.h包含:

/* 7.8.1.1 Exact-width integer types */

#ifdef __INT8_TYPE__
typedef __INT8_TYPE__ int8_t;
#endif
#ifdef __INT16_TYPE__
typedef __INT16_TYPE__ int16_t;
#endif
#ifdef __INT32_TYPE__
typedef __INT32_TYPE__ int32_t;
#endif
#ifdef __INT64_TYPE__
typedef __INT64_TYPE__ int64_t;
#endif
#ifdef __UINT8_TYPE__
typedef __UINT8_TYPE__ uint8_t;
#endif
#ifdef __UINT16_TYPE__
typedef __UINT16_TYPE__ uint16_t;
#endif
#ifdef __UINT32_TYPE__
typedef __UINT32_TYPE__ uint32_t;
#endif
#ifdef __UINT64_TYPE__
typedef __UINT64_TYPE__ uint64_t;
#endif

这表明 __UINT32_TYPE__在 VSC 解析我的代码时未定义，但在我使用 make 和 gcc 构建时定义。

编辑:

按照@mbmcavoy 的回答，我包括了我的 c_cpp_properties.json文件在这里:

{
    "configurations": [
        {
            "name": "Mac",
            "includePath": [
                "${HOME}/dev/gcc-arm-none-eabi-4_9-2015q3/lib/gcc/arm-none-eabi/4.9.3/include",
                "${HOME}/dev/nRF5_SDK_14.0.0_3bcc1f7/components/libraries/util",
                "${HOME}/dev/nRF5_SDK_14.0.0_3bcc1f7/config",
                [many more of these omitted]
                "${HOME}/dev/wisol_SDK_SFM20Rx_master/development/sigfox_cfg2/source",
                "${workspaceRoot}"
            ],
            "browse": {
                "path": [
                    "${HOME}/dev/gcc-arm-none-eabi-4_9-2015q3/lib/gcc/arm-none-eabi/4.9.3/include",
                    "${HOME}/dev/nRF5_SDK_14.0.0_3bcc1f7/components/libraries/util",
                    "${HOME}/dev/nRF5_SDK_14.0.0_3bcc1f7/config",
                    [many more of these omitted]
                    "${workspaceRoot}"
                ],
                "databaseFilename": "${workspaceRoot}/.vscode/browse.vc.db"
            },
            "intelliSenseMode": "clang-x64",
            "macFrameworkPath": [
                "/System/Library/Frameworks",
                "/Library/Frameworks"
            ],
            "defines": [
                "__UINT_LEAST16_MAX__=65535",
                "__UINT_LEAST8_TYPE__=unsigned char",
                "__UINT8_MAX__=255",
                "__UINT_FAST64_MAX__=18446744073709551615ULL",
                "__UINT_FAST8_MAX__=4294967295U",
                "__UINT_LEAST64_MAX__=18446744073709551615ULL",
                "__UINT_LEAST8_MAX__=255",
                "__UINTMAX_TYPE__=long long unsigned int",
                "__UINT32_MAX__=4294967295UL",
                "__UINT16_C(c)=c",
                "__UINT16_MAX__=65535",
                "__UINT8_TYPE__=unsigned char",
                "__UINT64_C(c)=c ## ULL",
                "__UINT_LEAST16_TYPE__=short unsigned int",
                "__UINT64_MAX__=18446744073709551615ULL",
                "__UINTMAX_C(c)=c ## ULL",
                "__UINT_FAST32_MAX__=4294967295U",
                "__UINT_LEAST64_TYPE__=long long unsigned int",
                "__UINT_FAST16_TYPE__=unsigned int",
                "__UINT_LEAST32_MAX__=4294967295UL",
                "__UINT16_TYPE__=short unsigned int",
                "__UINTPTR_MAX__=4294967295U",
                "__UINT_FAST64_TYPE__=long long unsigned int",
                "__UINT_LEAST32_TYPE__=long unsigned int",
                "__UINT8_C(c)=c",
                "__UINT64_TYPE__=long long unsigned int",
                "__UINT32_C(c)=c ## UL",
                "__UINT_FAST32_TYPE__=unsigned int",
                "__UINTMAX_MAX__=18446744073709551615ULL",
                "__UINT32_TYPE__=long unsigned int",
                "__UINTPTR_TYPE__=unsigned int",
                "__UINT_FAST16_MAX__=4294967295U",
                "__UINT_FAST8_TYPE__=unsigned int"
            ]
        }
    ],
    "version": 3
}

编辑:

深入挖掘后，我发现 gcc-arm-none-eabi-4_9-2015q3/lib/gcc/arm-none-eabi/4.9.3/include/stdint.h有__STDC_HOSTED__定义，因此 stdint-gcc.h实际上并没有被包括在内。相反，该 header 执行“include_next <stdint.h> ”，它找到 gcc-arm-none-eabi-4_9-2015q3/arm-none-eabi/include/stdint.h .我仍然看不到 unint32_t 的定义位置，无论是针对 gcc 和 make 还是针对 VSC。

Answer 1

在尝试了所有建议的解决方案都没有效果后，我认为 uint32_t 问题是一个错误。

要解决 VSCode 中烦人的警告，只需在#include 部分后添加以下行:

typedef __uint32_t uint32_t;

通过在单个文件中执行一次，它修复了我的 VSCode 警告并仍然可以编译。