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Re: [PATCH] Backport PR47324 to gcc 4.5 branch
- From: Jack Howarth <howarth at bromo dot med dot uc dot edu>
- To: Jason Merrill <jason at redhat dot com>
- Cc: gcc-patches at gcc dot gnu dot org, mikestump at comcast dot net, jakub at redhat dot com, iains at gcc dot gnu dot org
- Date: Wed, 16 Feb 2011 17:33:18 -0500
- Subject: Re: [PATCH] Backport PR47324 to gcc 4.5 branch
- References: <20110214115359.GA9219@bromo.med.uc.edu> <4D5C4CFF.2060202@redhat.com>
On Wed, Feb 16, 2011 at 05:17:35PM -0500, Jason Merrill wrote:
> On 02/14/2011 06:53 AM, Jack Howarth wrote:
>> The attached patch backports the missing usage of the DWARF2_FRAME_REG_OUT
>> macro in gcc/dwarf2out.c for gcc 4.5.3. This bug is latent in gcc-4_5-branch
>> to the absence of...
>
> Hmm, since as you say this bug is latent in 4.5, it can't be a
> regression, and therefore doesn't really seem suitable for that branch.
Latent in the sense that we don't have a test case in hand that triggers
the wrong code dwarf eh generation. However this requires an execution test
so it doesn't mean such code doesn't exist in the wild. In a sense, this should
fall under the obvious rule because darwin requires use of DWARF2_FRAME_REG_OUT
on any registers emitted in the dwarf for eh on i386.
Jack
>
> Jason