Date: Wed, 29 Jul 2020 19:12:52 -0500 From: "A. Wilcox" <awilfox@...lielinux.org> To: musl@...ts.openwall.com, bug-bison@....org Subject: Re: Building Bison 3.7 with musl (was Re: portability issues with unicodeio) On 29/07/2020 19:05, Rich Felker wrote: > On Wed, Jul 29, 2020 at 06:23:19PM -0500, A. Wilcox wrote: >> Seeing some weird behaviour here building Bison 3.7 on musl libc. >> >> Something seems to be "intelligent" enough to know that \u2022 is a >> bullet character, and is replacing it with "*" instead of ".", causing >> all the tests to fail: >> >> awilcox on gwyn  bison: LC_ALL=C /bin/printf '\u2022\n' | od -t x1 >> 0000000 2a 0a >> 0000002 > > I don't think the '*' has anything to do with it being a bullet > character. It's just the implementation-defined replacement character > musl's iconv uses. Ah, ok. > I would guess the code in bison and coreutils printf is assuming the > non-conforming glibc behavior for iconv of returning an error if a > character from the input is not exactly representable in the output, > rather than making replacements and returning the number of inexact > conversions made. Actually, it's assuming iconv will replace \u2022 with '.', and failing because it isn't: @@ -1,9 +1,9 @@ State 0 - 0 $accept: . S $end - 1 S: . 'a' A 'a' - 2 | . 'b' A 'b' - 3 | . 'c' c + 0 $accept: * S $end + 1 S: * 'a' A 'a' + 2 | * 'b' A 'b' + 3 | * 'c' c 'a' shift, and go to state 1 'b' shift, and go to state 2 This test gets more and more "fun" the more platforms it's ported to. --arw -- A. Wilcox (awilfox) Project Lead, Adélie Linux https://www.adelielinux.org Download attachment "signature.asc" of type "application/pgp-signature" (834 bytes)
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