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[components][libc] cplusplus_system_init 补上 .init_array 的构造函数 - #11856

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[components][libc] cplusplus_system_init 补上 .init_array 的构造函数#11856
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@cms19859230182-lang cms19859230182-lang commented Oct 8, 2026

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Fixes #11778

新版 GCC 把 C++ 全局构造函数放进 .init_array，不再放 .ctors。
cplusplus_system_init() 原来只跑 ctors_start 到 ctors_end 这一段，
而很多 BSP 的链接脚本没把 .init_array 收进这个区间，全局对象的构造函数就没被调用。

现在再把 __init_array_start 到 __init_array_end 跑一遍。这两个符号声明成 weak，
链接脚本没提供时就是空，直接跳过，不会链接失败。如果脚本已经把 .init_array
合并进 ctors 区间了，两段重叠，也跳过，避免构造函数跑两遍。

在 bsp/simulator 上打开 RT_USING_CPLUSPLUS 编过，rtthread.elf 里能看到 cplusplus_system_init。

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github-actions Bot commented Oct 8, 2026 •
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📌 Code Review Assignment

🏷️ Tag: components

Reviewers: @Maihuanyi

Changed Files (Click to expand)
  • components/libc/cplusplus/cxx_crt_init.c

🏷️ Tag: components_libc

Reviewers: @GorrayLi @mysterywolf

Changed Files (Click to expand)
  • components/libc/cplusplus/cxx_crt_init.c

📊 Current Review Status (Last Updated: 2026-10-08 19:34 CST)

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MemBrowse Memory Report

No memory changes detected for:

@cms19859230182-lang
[components][libc] cplusplus_system_init 补上 .init_array 的构造函数
479b204 
指针比较改走 uintptr_t，for 循环补上花括号。

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[Bug] 很多bsp对c++的自动构造函数支持有问题

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