'packed' attribute ignored [-Wattributes]警告时,意味着packed属性没有被正确应用或无法应用于当前的上下文。 这个警告可能由以下几个原因引起: packed属性被错误地放置在了结构体定义之外的位置。 编译器可能不支持在某些特定类型或上下文中使用packed属性。 编译器配置或编译选项可能影响了packed属性的应用。
51单片机WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS 编译程序时出现如下警告: WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS 出现这种警告是由于定义的函数或者代码段常量没有使用造成的,并不会影响程序的运行,但是会浪费空间。介意的话,就根据编译的提示,逐个删除未使用的代码。不介意...
Problem:Why does the compiler ignore__attribute__((packed))? Solution:Ensure that the__attribute__((packed))keyword and attribute specification immediately follows the right brace (}) of the structure declaration. If it is in any other position (such as, following a structure instance instead ...
"S:/Projects/JTSI - Phase 1-2 Technology Dev/Software/CodeWarrior/QP/lwip-1.3.1/src/include/ipv4/lwip/ip_addr.h", line 64: warning: a reduction in alignment without the "packed" attribute is ignored for the following ip_addr.h file code snippet: PACK_STRUCT_BEGIN structip_addr { PAC...
& yeah, ignoring the warning in GCC - could be suppressed with a pragma, or is implicitly ignored in a system header, etc. Why your customer couldn't obey the warning and just remove an attribute? I really wish to ask at gcc bugzilla why do not they classify this as an error. :) ...
Solved: Hello, Two questions. First one : __attribute__((__packed__)) does not work: for a structure typedef __attribute__((__packed__)) struct a_s {
声明看起来没问题。但是，请尝试遵循以下其中一项，以避免静默属性丢弃。
声明看起来没问题。但是，请尝试遵循以下其中一项，以避免静默属性丢弃。
typedef struct __attribute(( packed )) 已经解决 改成 typedef __packed struct 就行 新问题是， ...
} __attribute__((packed)) fat32; } QEMU_PACKED fat32; } u; uint8_t fat_type[8]; uint8_t ignored[0x1c0]; uint8_t magic[2]; } __attribute__((packed)) bootsector_t; } QEMU_PACKED bootsector_t; typedef struct { uint8_t head; @@ -253,15 +253,15 @@ typedef struct par...