Re: [BUG] Misplaced quote in %d printf format crashes Zsh

["Mark J. Reed" <markjreed@gmail.com>]

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Duplicated on my Macs; /bin/zsh (5.9) exhibits the crash on both x86_64 and
ARM (M2).

My locally-built 5.9.0.1-dev does not exhibit the symptom. To see if it was
a build thing or the result of a code change, I checked out the zsh-5.9 tag
and built that... and it also did not crash. So it seems to be something
about Apple's build environment.

On Sat, Jun 8, 2024 at 7:04 PM Mark J. Reed <markjreed@gmail.com> wrote:

> I'm away from my Mac at the moment, but FWIW, the crash does not appear to
> happen on Windows (MSYS64):
>
> *(0)> printf -v result " %5'd"*
> *printf: %5': invalid directive*
> *(1)> $0 --version*
> *zsh 5.9 (x86_64-pc-msys)*
>
>
> On Sat, Jun 8, 2024 at 5:13 PM Philippe Altherr <
> philippe.altherr@gmail.com> wrote:
>
>> On macOS 14.5 running Zsh 5.9, the following command crashes Zsh:
>>
>> % zsh -c "printf -v result \" %5'd\""
>>
>> zsh:printf:1: %5': invalid directive
>>
>> zsh(41890,0x7ff8450ddfc0) malloc: *** error for object 0x600002c811e0:
>> pointer being realloc'd was not allocated
>>
>> zsh(41890,0x7ff8450ddfc0) malloc: *** set a breakpoint in
>> malloc_error_break to debug
>>
>> zsh: abort      zsh -c "printf -v result \" %5'd\""
>>
>> Surprisingly, dropping the -v option, removing the space before the %,
>> or adding an echo command after the printf command avoid the crash:
>>
>> % zsh -c "printf \" %5'd\""
>>
>> zsh:printf:1: %5': invalid directive
>>
>>  *%*
>>
>> % zsh -c "printf -v result \"%5'd\""
>>
>> zsh:printf:1: %5': invalid directive
>>
>> % zsh -c "printf -v result \" %5'd\"; echo foo"
>>
>> zsh:printf:1: %5': invalid directive
>>
>> foo
>>
>> Philippe
>>
>>
>
> --
> Mark J. Reed <markjreed@gmail.com>
>


-- 
Mark J. Reed <markjreed@gmail.com>

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