[Bug ld/30724] Massive ld performance regression in binutils-2.41 since 014a602b86f08de96fc80ef3f96a87db6cccad56

[Stromeko at nexgo dot de]

https://sourceware.org/bugzilla/show_bug.cgi?id=30724

--- Comment #3 from Achim <Stromeko at nexgo dot de> ---
(In reply to Andrew Pinski from comment #2)
> That would be then a bug in cygwin stdio code I suspect ...

Maybe, or maybe it actually has to be that way since the wording in POSIX seems
to imply that when certain open modes are in effect, then an fseek requires
flushing or the equivalent thereof (when the mode changes, which Cygwin may not
be able to detect reliably, so it may have to assume the mode will change).

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