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major stdio overhaul, using readv/writev, plus other changes
[musl]
/
src
/
stdio
/
__uflow.c
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#include "stdio_impl.h"
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/* This function will never be called if there is already data
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* buffered for reading. Thus we can get by with very few branches. */
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int __uflow(FILE *f)
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{
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unsigned char c = EOF;
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if (f->rend || !__toread(f)) f->read(f, &c, 1);
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return c;
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}