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Sat, 08 Jun 2024 16:04:48 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: "Mark J. Reed" Date: Sat, 8 Jun 2024 19:04:36 -0400 Message-ID: Subject: Re: [BUG] Misplaced quote in %d printf format crashes Zsh To: Zsh hackers list Content-Type: multipart/alternative; boundary="0000000000005dcf49061a68f147" X-Seq: 52949 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: , List-Subscribe: , List-Unsubscribe: , List-Post: List-Owner: List-Archive: --0000000000005dcf49061a68f147 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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=E2=80=AFPM Philippe Altherr 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 > > --=20 Mark J. Reed --0000000000005dcf49061a68f147 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I'm away from my Mac at the moment, but FWIW, the cras= h 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=E2=80=AFPM Philippe Altherr <= ;philippe.altherr@gmail.com> wrote:
On macOS=C2=A014.5 running Zsh 5.9, the following command cr= ashes Zsh:

% zsh -c "printf -v result \" %5'd\""

zsh:printf:1: %5': invalid directive

zsh(41890,0x7ff8450ddfc0) malloc: *** error for object 0x600002c81= 1e0: pointer being realloc'd was not allocated

zsh(41890,0x7ff8450ddfc0) malloc: *** set a breakpoint in malloc_e= rror_break to debug

zsh: abort=C2=A0 =C2=A0 =C2=A0 zsh -c "printf -v= result \" %5'd\""


Surprisingly= , dropping the=C2=A0-v=C2=A0option= , removing the space before the=C2=A0%, or adding an=C2=A0echo=C2=A0= command after the=C2=A0printf=C2= =A0command avoid the crash:

% zsh -c "printf \" %5'd\""=C2=A0

zsh:printf:1: %5': invalid directive

=C2=A0%<= /b>

% zsh -c "printf -v result \"%5'd\&quo= t;"

zsh:printf:1: %5': invalid directive

% zsh -c "printf -v result \" %5'd\"; echo foo&= quot;

zsh:printf:1: %5': invalid directive

foo


Philippe



--
Ma= rk J. Reed <mar= kjreed@gmail.com>
--0000000000005dcf49061a68f147--