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Re^3: [Win32] Weird behavioural change between 5.38.0 and 5.40.0

by ikegami (Patriarch)
on Aug 12, 2024 at 14:51 UTC ( [id://11161017]=note: print w/replies, xml ) Need Help??


in reply to Re^2: [Win32] Weird behavioural change between 5.38.0 and 5.40.0
in thread [Win32] Weird behavioural change between 5.38.0 and 5.40.0

So I think it's probably a case of the mingw C runtime having only recently "caught up to" (and synced with) something that has been present in Microsoft's C runtime for quite a while.

I think they changed compiler and in the process changed from one MS runtime (MSVCRT) to a new one MS runtime (UCRT). See my other comment.

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Re^4: [Win32] Weird behavioural change between 5.38.0 and 5.40.0
by syphilis (Archbishop) on Aug 13, 2024 at 01:58 UTC
    I think they changed compiler and in the process changed from one MS runtime (MSVCRT) to a new one MS runtime (UCRT)

    Yes - Winlibs are still providing both flavours.
    I initially thought I had a UCRT build of perl-5.38.0, and a second MSVCRT build of perl-5.38.0 - both of which were exhibiting the same behaviour.
    But it turns out they were both MSVCRT. (Silly me - UCRT mingw-w64 builds of perl weren't enabled until about 5.39.2.)

    I agree that it will be the switch from MSVCRT to UCRT that has introduced the change. And this is further supported by the fact that my VS 2022 (UCRT) builds of perl show the same behaviour as my mingw-w64 (UCRT) builds.

    Cheers,
    Rob
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