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From: Andreas Schwab <schwab@linux-m68k.org>
To: Neven Sajko <nsajko@gmail.com>
Cc: Jan Kratochvil <jan.kratochvil@redhat.com>,  gdb@sourceware.org
Subject: Re: Printing a 2D array in a C program
References: <CAL+bK4NidroyapZhGvtVVsiCbu4=Hz56mF4_oU3iXM-rvqY_xw@mail.gmail.com>	<20160304144231.GA7767@host1.jankratochvil.net>	<CAL+bK4MV9ZLkon2PONYRpF0506P8zE3=Ukm0F1zpVDHd2HpAtw@mail.gmail.com>
X-Yow: Two LITTLE black dots and one BIG black dot...nice 'n' FLUFFY!!
Date: Fri, 04 Mar 2016 18:34:00 -0000
In-Reply-To: <CAL+bK4MV9ZLkon2PONYRpF0506P8zE3=Ukm0F1zpVDHd2HpAtw@mail.gmail.com>	(Neven Sajko's message of "Fri, 4 Mar 2016 17:15:26 +0100")
Message-ID: <87k2lim6rg.fsf@linux-m68k.org>
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Neven Sajko <nsajko@gmail.com> writes:

> In my question I asked about C (not C++), I even mentioned the
> gcc -std=gnu90 option.
>
> My code is thus:
>
> enum {
>         sz = 17
> };
>
> void p(int m[sz][sz], int n) {
>         int i;
>         for (i=1; i<n; i++) {
>                 int j;
>                 for (j=i-1; 0<=j; j--) {
>                         m[i][j] = abs(3*m[i-1][j] +2*m[i][j+1]) % 9340506;
>                 }
>         }
> }
>
> void f(int n) {
>         int m[sz][sz];
>
>         g(m, n);
>
>         p(m, n);
>
>         r(m, n);
> }
>
>
> So, when I am in f, `info locals` prints it like {{a11, ...,
> a1n}, ..., {an1, ..., ann}}.
> But in p `print *m` just gets me {a11, ..., a1n}.

This is correct, *m has the type int[sz].  If you want to print all
elements pointed to by m you need to use `print *m@sz'.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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