[Bug libstdc++/94268] std::filebuf is extremely (at least 10x) slow on windows compared to Linux. Even much slower MSVC STL with terrible ABI.

euloanty at live dot com gcc-bugzilla@gcc.gnu.org
Mon May 25 00:23:10 GMT 2020

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94268

--- Comment #10 from fdlbxtqi <euloanty at live dot com> ---
What about adding another check when BUFSIZ is smaller than 4KB? If it is
smaller than 4kb, adjust the filebuf size to 4kb at least.

Previous message (by thread): [Bug tree-optimization/95308] [10 Regression] ICE: in maybe_canonicalize_mem_ref_addr with -O3 -march=skylake-avx512 since r10-4203-g97c146036750e7cb
Next message (by thread): [Bug middle-end/95309] New: [11 Regression] Many targets failing ssa-dom-cse-2.c after vectorizer changes
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