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Groups > comp.lang.c++ > #91591
| From | James Kuyper <jameskuyper@alumni.caltech.edu> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: What a bug |
| Date | 2023-09-08 00:09 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <ude6pm$3av40$1@dont-email.me> (permalink) |
| References | (2 earlier) <ud2t4q$12vk6$1@dont-email.me> <87pm2y6af4.fsf@nosuchdomain.example.com> <ud6qom$1tniq$1@dont-email.me> <87v8cp3phf.fsf@nosuchdomain.example.com> <udb1c2$2mc8a$1@dont-email.me> |
On 9/6/23 19:18, jak wrote:
...
> However, it is obvious that it prints the warnings, I extracted the test
> intentionally from the function/method, because otherwise the compiler
> does not recognize the UB. If I modified my program in this way:
>
> $ cat ./pp.cpp
> #include <iostream>
>
> int main()
> {
> auto eif = [] (char const *a, char const *b) {
> std::cout << ( ( a == b ) ? "equal" : "not equal" ) << std::endl;
> };
> char const *sp = "hello";
> char sl[] = "hello";
>
> eif( sp, sp );
> eif( "hello", sp );
> eif( "hello", "hello" );
> eif( "hello", sl );
>
> return 0;
> }
>
> $ g++ -Wall -Wpedantic -Werror -std=c++17 ./pp.cpp -o ./pp
>
> $ ./pp
> equal
> equal
> equal
> not equal
>
> $ _
>
> The warnings disappear but the UB remain.
What UB are you referring to?
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What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-01 19:35 +0200
Re: What a bug "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2023-09-01 23:09 +0200
Re: What a bug "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-09-01 14:52 -0700
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-02 06:23 +0200
Re: What a bug Muttley@dastardlyhq.com - 2023-09-02 10:25 +0000
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-02 12:56 +0200
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-02 14:35 +0200
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-02 14:41 +0200
Re: What a bug Muttley@dastardlyhq.com - 2023-09-02 15:30 +0000
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-02 18:10 +0200
Re: What a bug "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-09-01 14:50 -0700
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-02 06:19 +0200
Re: What a bug "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-09-03 15:25 -0700
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-04 04:53 +0200
Re: What a bug "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-09-03 20:01 -0700
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-04 06:59 +0200
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-04 11:11 +0200
Re: What a bug "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-09-04 18:48 -0700
Re: What a bug "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-09-14 16:27 -0700
Re: What a bug scott@slp53.sl.home (Scott Lurndal) - 2023-09-04 14:24 +0000
Re: What a bug "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-09-18 16:20 -0700
Re: What a bug Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2023-09-04 18:43 -0400
Re: What a bug red floyd <no.spam.here@its.invalid> - 2023-09-04 17:36 -0700
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-05 05:49 +0200
Re: What a bug Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2023-09-06 12:00 -0400
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-06 19:46 +0200
Re: What a bug Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2023-09-06 14:44 -0400
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-07 04:51 +0200
Re: What a bug Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2023-09-06 23:54 -0400
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-07 06:58 +0200
Re: What a bug Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2023-09-07 11:08 -0400
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-07 17:56 +0200
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-07 18:04 +0200
Re: What a bug Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2023-09-07 19:35 -0400
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-07 17:46 +0200
Re: What a bug jak <nospam@please.ty> - 2023-09-02 23:15 +0200
Re: What a bug jak <nospam@please.ty> - 2023-09-03 23:17 +0200
Re: What a bug Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2023-09-03 17:37 -0700
Re: What a bug jak <nospam@please.ty> - 2023-09-05 11:01 +0200
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-05 11:12 +0200
Re: What a bug Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2023-09-05 03:04 -0700
Re: What a bug jak <nospam@please.ty> - 2023-09-07 01:18 +0200
Re: What a bug James Kuyper <jameskuyper@alumni.caltech.edu> - 2023-09-08 00:09 -0400
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-05 11:11 +0200
Re: What a bug red floyd <no.spam.here@its.invalid> - 2023-09-05 20:53 -0700
Re: What a bug Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2023-09-05 21:14 -0700
Re: What a bug red floyd <no.spam.here@its.invalid> - 2023-09-06 17:51 -0700
Re: What a bug Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-06 06:49 +0200
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