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From: Richard Biener <richard.guenther@gmail.com>
Date: Fri, 4 Sep 2020 09:08:16 +0200
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Subject: Re: about souce code location
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On Fri, Sep 4, 2020 at 2:23 AM =E6=98=93=E4=BC=9A=E6=88=98 via Gcc <gcc@gcc=
.gnu.org> wrote:
>
> I am working a instrumention tool, and need get the location info for a g=
imple statement. I use the location structure to get the info, and it can w=
ork when i use -O1. When I use -O2, sometimes the info seems to be lost and=
 I get line num is zero.&nbsp; anyone can tell me how to get the info?

Not all statements have a location, if you encounter such you need to
look at the "surrounding context"
to find one.