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Date: Wed, 8 May 2019 15:54:35 -0400
From: John Mudd <johnbmudd@...il.com>
To: musl <musl@...ts.openwall.com>
Cc: John Mudd <johnbmudd@...il.com>
Subject: Re: __strftime_l: symbol not found

Here's more details. I'm trying to load a library that includes some C++
code. It requires libstdc++.so.6 which is looking for __strftime_l.

$ nm -D /usr/rx30/musl/lib/libstdc++.so.6 | grep __strftime_l
         U __strftime_l
$

I get the following error when trying to load libstdc++.so.6.
Error relocating /usr/rx30/musl/lib/libstdc++.so.6: __strftime_l: symbol
not found



On Wed, May 8, 2019 at 12:26 PM John Mudd <johnbmudd@...il.com> wrote:

> Hi, I'm upgrading my musl from 1.19 to 1.22 but it looks like I lost
> the __strftime_l function. It's present in the 1.19 libc.so but not in 1.22.
>
> $ nm -D /home/mudd/musl-1.1.19.install/lib/libc.so | grep __strftime_l
> 0007b6a0 T __strftime_l
> $ nm -D /home/mudd/musl-1.1.22.install/lib/libc.so | grep __strftime_l
> $
>
>
> Here's the diff on the source code. I can't explain how this diff would
> cause the function to disappear. Any suggestions?
>
> $ diff musl-1.1.19/src/time/strftime.c  /musl-1.1.22/src/time/strftime.c
> 9d8
> < #include "libc.h"
> 12,13d10
> < const char *__nl_langinfo_l(nl_item, locale_t);
> <
> 48,50d44
> < const char *__tm_to_tzname(const struct tm *);
> < size_t __strftime_l(char *restrict, size_t, const char *restrict, const
> struct tm *restrict, locale_t);
> <
> 184,186c178,179
> <               *l = snprintf(*s, sizeof *s, "%+.2d%.2d",
> <                       (tm->__tm_gmtoff)/3600,
> <                       abs(tm->__tm_gmtoff%3600)/60);
> ---
> >               *l = snprintf(*s, sizeof *s, "%+.4ld",
> >                       tm->__tm_gmtoff/3600*100 +
> tm->__tm_gmtoff%3600/60);
> $
>

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