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reads: fix bug 1078
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@ -86,7 +86,8 @@ char *reads(int fd, char *buffer, size_t size)
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if (p) {
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off_t offset;
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*p++ = '\0';
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offset = (p-buffer) - size;
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// avoid incorrect (unsigned) widening
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offset = (off_t)(p-buffer) - (off_t)size;
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// set fd position the right after the \n
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if (offset && lseek(fd, offset, SEEK_CUR) == (off_t)-1)
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return NULL;
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