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From: Tom Tromey <tom@tromey.com>
To: simon.marchi@polymtl.ca
Cc: gdb-patches@sourceware.org
Subject: Re: [PATCH] gdb/dwarf: fix reading DW_FORM_addrx with address size of 2
Date: Fri, 18 Sep 2026 11:15:47 -0600	[thread overview]
Message-ID: <87eceqv5to.fsf@tromey.com> (raw)
In-Reply-To: <20260916014513.3386344-1-simon.marchi@polymtl.ca> (simon marchi's message of "Tue, 15 Sep 2026 21:45:10 -0400")

>>>>> simon marchi <simon.marchi@polymtl.ca> writes:

> From: Simon Marchi <simon.marchi@polymtl.ca>
> While investigating AVR binaries for bug 34638, I stumbled on a crash of
> GDB when loading an AVR binary generated by clang:

Thanks.

> +  /* Check that the whole entry fits inside the section.  */
> +  if (addr_base_or_zero + (addr_index + 1) * (ULONGEST) addr_size
> +      > per_bfd->addr.size)

The cast to ULONGEST seems weird to me, especially since it isn't
repeated later:

> +  const gdb_byte *info_ptr
> +    = per_bfd->addr.buffer + addr_base_or_zero + addr_index * addr_size;

I'd suggest removing the cast.

Approved-By: Tom Tromey <tom@tromey.com>

Tom

  reply	other threads:[~2026-09-18 17:16 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-16  1:45 simon.marchi
2026-09-18 17:15 ` Tom Tromey [this message]
2026-09-21 14:41   ` Simon Marchi

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