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fix(stdio): ensure compatibility with newlib <3.4.0 by handling removed __sdidinit #10791

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Merged
supperthomas merged 3 commits into from
Oct 13, 2025
Merged

fix(stdio): ensure compatibility with newlib <3.4.0 by handling removed __sdidinit #10791

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6fe00cb
Fix stdio compatibility with Newlib >= 3.4.0
loremmoqi Oct 11, 2025
443e5ba
Standard comments are in C++ style.
loremmoqi Oct 11, 2025
bf93762
delete extra space at the end of this line 109
loremmoqi Oct 12, 2025
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8 changes: 6 additions & 2 deletions components/libc/posix/io/stdio/stdio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -104,8 +104,12 @@ int rt_posix_stdio_set_console(const char* device_name, int mode)
_GLOBAL_REENT->_stderr = std_console;
}

#if (NEWLIB_VERSION_NUM < 30400U) || (NEWLIB_VERSION_NUM >= 40000U && NEWLIB_VERSION_NUM < 40300U)
_GLOBAL_REENT->__sdidinit = 1; /* __sdidinit is obselete */
#if defined(_REENT_SMALL) || !defined(__sdidinit)
/* Newlib >= 3.4.0 or small reent version: no __sdidinit field */
/* Do nothing */
#else
/* Older newlib versions (typically < 3.4.0) still define __sdidinit */
_GLOBAL_REENT->__sdidinit = 1;
#endif
}

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