Any C++ regex template class gotchas?
X-posted to IBM-MAIN and MVS-OE. (The latter seems more appropriate but the former has more traffic by far.) I'm trying to use the C++ template class regex for the first time. I have code that works without any hint of an error on Windows but I am getting a S0C4 on z/OS when the destructor calls some routine in the LE runtime library. I've put in typical debugging checks for storage overlays with no hint of an error. Anyone know of any particular gotchas relative to the regex class for z/OS C++? Thanks, Charles -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
Believe it or not, it appears to be a bug in the C++ runtime. Anyone who
wants to prove me wrong is welcome to try the below. I have tested only on
z/OS V2R2.
#include
#define __IBMCPP_TR1__ 1
#include
class myRegex
{
public:
std::tr1::regex regexObject;
};
int main(int argc, char* argv[])
{
printf("RegEx test 4/6/2018\n");
std::tr1::regex::flag_type flags = std::tr1::regex::extended; //
necessary for error
myRegex *myRegex_p = new myRegex;
myRegex_p->regexObject.assign("foo", flags);
delete myRegex_p;
return 0;
}
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of Charles Mills
Sent: Friday, April 6, 2018 6:00 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Any C++ regex template class gotchas?
X-posted to IBM-MAIN and MVS-OE. (The latter seems more appropriate but the
former has more traffic by far.)
I'm trying to use the C++ template class regex for the first time. I have
code that works without any hint of an error on Windows but I am getting a
S0C4 on z/OS when the destructor calls some routine in the LE runtime
library. I've put in typical debugging checks for storage overlays with no
hint of an error.
Anyone know of any particular gotchas relative to the regex class for z/OS
C++?
--
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
On 4/8/2018 12:09 PM, Charles Mills wrote: Believe it or not, it appears to be a bug in the C++ runtime. Anyone who wants to prove me wrong is welcome to try the below. I have tested only on z/OS V2R2. No convenient access, but let me guess: blows up in the delete? Got an error message? -- Jack J. Woehr # Science is more than a body of knowledge. It's a way of www.well.com/~jax # thinking, a way of skeptically interrogating the universe www.softwoehr.com # with a fine understanding of human fallibility. - Carl Sagan -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
It do. The error message is ABEND=S0C4 U REASON=0004. Traceback: DSA Entry E Offset Statement Load Mod Program Unit Service Status 1 CEEHDSP +4A4C CEEPLPKA CEEHDSP HLE77A0 Call 2 std::tr1::_EBCDIC::_Destroy(std::tr1::_EBCDIC::_Node_base*) +0066 40 CRTE128N Exception 3 std::tr1::_EBCDIC::basic_regexmailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Jack J. Woehr Sent: Sunday, April 8, 2018 2:59 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Any C++ regex template class gotchas? On 4/8/2018 12:09 PM, Charles Mills wrote: > Believe it or not, it appears to be a bug in the C++ runtime. Anyone > who wants to prove me wrong is welcome to try the below. I have tested > only on z/OS V2R2. No convenient access, but let me guess: blows up in the delete? Got an error message? -- Jack J. Woehr # Science is more than a body of knowledge. It's a way of www.well.com/~jax # thinking, a way of skeptically interrogating the universe www.softwoehr.com # with a fine understanding of human fallibility. - Carl Sagan -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
On 4/8/2018 1:04 PM, Charles Mills wrote: It do. The error message is ABEND=S0C4 U REASON=0004. Try initializing the regex in the declaration instead of doing it in main() via pointer-to-reference; -- Jack J. Woehr # Science is more than a body of knowledge. It's a way of www.well.com/~jax # thinking, a way of skeptically interrogating the universe www.softwoehr.com # with a fine understanding of human fallibility. - Carl Sagan -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
Thanks, but won't work well in the real code. I have multiple instantiations of the same class, and don't know the pattern until well after the instantiation. Pattern may change after instantiation. It doesn't take much to make it work. The std::tr1::regex::flag_type flags = std::tr1::regex::extended is necessary. ECMA (the default) works. Charles -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Jack J. Woehr Sent: Sunday, April 8, 2018 3:18 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Any C++ regex template class gotchas? On 4/8/2018 1:04 PM, Charles Mills wrote: > It do. The error message is ABEND=S0C4 U REASON=0004. Try initializing the regex in the declaration instead of doing it in main() via pointer-to-reference; -- Jack J. Woehr # Science is more than a body of knowledge. It's a way of www.well.com/~jax # thinking, a way of skeptically interrogating the universe www.softwoehr.com # with a fine understanding of human fallibility. - Carl Sagan -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
On 4/8/2018 1:43 PM, Charles Mills wrote: Thanks, but won't work well in the real code. I just meant as a debugging step. Make it work, then make it break again and you're home. -- Jack J. Woehr # Science is more than a body of knowledge. It's a way of www.well.com/~jax # thinking, a way of skeptically interrogating the universe www.softwoehr.com # with a fine understanding of human fallibility. - Carl Sagan -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
On 4/8/2018 1:43 PM, Charles Mills wrote: Thanks, but won't work well in the real code. Besides, the C++ way to do that is to have subclasses with increasingly specific ctors for your needs, not mess with a template's internal data in main(). Betcha if you work on the class design a little it will "magically" start working. -- Jack J. Woehr # Science is more than a body of knowledge. It's a way of www.well.com/~jax # thinking, a way of skeptically interrogating the universe www.softwoehr.com # with a fine understanding of human fallibility. - Carl Sagan -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
I'm not "messing" -- .assign() is a documented, public method. http://www.cplusplus.com/reference/regex/basic_regex/assign/ The pattern is supplied at run time -- as is typical of regex implementations -- so no number of subclasses solves the problem. It would conceivably be possible to pass the pattern on the ctor but that is not how the code works. I get the pattern well after ctor time. (Could I do a new instead of having it declared in the class header? Sure, I could. But why should I? I firmly believe this is a bug, and I do have a workaround, letting the flag default to ECMA.) For a given instance, the pattern can change from time to time -- should be supported by the class AFAIK. Charles -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Jack J. Woehr Sent: Sunday, April 8, 2018 4:49 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Any C++ regex template class gotchas? On 4/8/2018 1:43 PM, Charles Mills wrote: > Thanks, but won't work well in the real code. Besides, the C++ way to do that is to have subclasses with increasingly specific ctors for your needs, not mess with a template's internal data in main(). Betcha if you work on the class design a little it will "magically" start working. -- Jack J. Woehr # Science is more than a body of knowledge. It's a way of www.well.com/~jax # thinking, a way of skeptically interrogating the universe www.softwoehr.com # with a fine understanding of human fallibility. - Carl Sagan -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
On 4/8/2018 2:58 PM, Charles Mills wrote: I firmly believe this is a bug, and I do have a workaround, l I'll betcha it's not a bug, it's something about the flags being out of scope before the dtor is called for the object. C++ is, to put it mildly, design-heavy. You can prove it if you write the equivalent code on your home Linux box and it blows up there, too. -- Jack J. Woehr # Science is more than a body of knowledge. It's a way of www.well.com/~jax # thinking, a way of skeptically interrogating the universe www.softwoehr.com # with a fine understanding of human fallibility. - Carl Sagan -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
On 4/8/2018 2:58 PM, Charles Mills wrote: The pattern is supplied at run time -- as is typical of regex implementations -- so no number of subclasses solves the problem. Put the flags in the same scope as the regex and naybe it doesn't blow up. Either forget about your RegexObject and just do the regex inline in main() in which case you need no dtor, or put the flags instantiation inside the Regex Object. -- Jack J. Woehr # Science is more than a body of knowledge. It's a way of www.well.com/~jax # thinking, a way of skeptically interrogating the universe www.softwoehr.com # with a fine understanding of human fallibility. - Carl Sagan -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
Works ok for me. The code is sound so I would open a PMR.
On 9/04/2018 2:09 AM, Charles Mills wrote:
#include
#define __IBMCPP_TR1__ 1
#include
class myRegex
{
public:
std::tr1::regex regexObject;
};
int main(int argc, char* argv[])
{
printf("RegEx test 4/6/2018\n");
std::tr1::regex::flag_type flags = std::tr1::regex::extended; //
necessary for error
myRegex *myRegex_p = new myRegex;
myRegex_p->regexObject.assign("foo", flags);
delete myRegex_p;
return 0;
}
--
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Re: Any C++ regex template class gotchas?
On 9/04/2018 3:18 AM, Jack J. Woehr wrote: On 4/8/2018 1:04 PM, Charles Mills wrote: It do. The error message is ABEND=S0C4 U REASON=0004. Try initializing the regex in the declaration instead of doing it in main() via pointer-to-reference; That's not a pointer-to-reference. A pointer-to-reference is declared like so '*&'. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
On 9/04/2018 4:09 AM, Charles Mills wrote:
#include
#define __IBMCPP_TR1__ 1
#include
class myRegex
{
public:
std::tr1::regex regexObject;
};
int main(int argc, char* argv[])
{
printf("RegEx test 4/6/2018\n");
std::tr1::regex::flag_type flags = std::tr1::regex::extended; //
necessary for error
myRegex *myRegex_p = new myRegex;
myRegex_p->regexObject.assign("foo", flags);
delete myRegex_p;
return 0;
}
C++ isn't my first language and I'm not even sure I found the right
documentation, but does assign create a new regex rather than modifying
the existing one?
What is the scope of the new Regex? And templates can create different
classes based on the parameters so the result of regexObject.assign may
not even be the same type of object as when myRegex was instantiated.
I'm not sure if that is allowed or not - this sort of stuff is why I
avoid C++, too complex for me :-)
--
Andrew Rowley
Black Hill Software
+61 413 302 386
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Re: Any C++ regex template class gotchas?
On 9/04/2018 8:51 AM, Andrew Rowley wrote:
On 9/04/2018 4:09 AM, Charles Mills wrote:
#include
#define __IBMCPP_TR1__ 1
#include
class myRegex
{
public:
std::tr1::regex regexObject;
};
int main(int argc, char* argv[])
{
printf("RegEx test 4/6/2018\n");
std::tr1::regex::flag_type flags =
std::tr1::regex::extended; //
necessary for error
myRegex *myRegex_p = new myRegex;
myRegex_p->regexObject.assign("foo", flags);
delete myRegex_p;
return 0;
}
C++ isn't my first language and I'm not even sure I found the right
documentation, but does assign create a new regex rather than
modifying the existing one?
What is the scope of the new Regex? And templates can create different
classes based on the parameters so the result of regexObject.assign
may not even be the same type of object as when myRegex was instantiated.
There are two classes created for C++ regex's, basic_regex and
basic_regex. One for 8-bit chars and one for unicode 16-bit
chars. Assign replaces the existing regex with a new one. In Charles
case he hasn't
created a regex in the constructor so assign will just create a new one.
The scope is until delete is called. This is not idiomatic C++ where the
MyRegex object would be instantiated on the stack and the scope is
whatever the outer {} braces are. Deterministic resource finalization is
one of the strengths of
C++ and I would take it over Java GC any day of the week. It's also
unusual to see the use of the new operator in modern C++ where raw
pointers are generally banned by coding standards. One would use
make_unique or make_shared
or on z/OS which doesn't fully support C++11 shared_ptr(new T).
I'm not sure if that is allowed or not - this sort of stuff is why I
avoid C++, too complex for me :-)
Indeed! Complex it most certainly can be. Having said that if you're
lucky enough to have a modern C++ compiler and keep it simple it's
actually an easy language to learn and incredibly powerful.
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Re: Any C++ regex template class gotchas?
Charles,
Do you get fed up with having to specify the pesky tr1 namespace? It
makes it difficult to share code between z/OS and distributed. You can
work around that with a useful namespace declaration.
Also, if you are using LANGLVL(EXTENDED0X) you can significantly cut
down on the verbosity of variable definitions by using auto type inference.
#include // bring C stdio runtime into the std namespace
#define __IBMCPP_TR1__ 1
#include
namespace std { using namespace tr1; } // be gone pesky tr1 namespace
struct myRegex
{
std::regex regexObject;
};
int main(int argc, char* argv[])
{
printf("RegEx test 4/6/2018\n");
auto flags = std::regex::extended; // necessary for error
auto *myRegex_p = new myRegex;
myRegex_p->regexObject.assign("foo", flags);
delete myRegex_p;
return 0;
}
On 9/04/2018 2:09 AM, Charles Mills wrote:
Believe it or not, it appears to be a bug in the C++ runtime. Anyone who
wants to prove me wrong is welcome to try the below. I have tested only on
z/OS V2R2.
#include
#define __IBMCPP_TR1__ 1
#include
class myRegex
{
public:
std::tr1::regex regexObject;
};
int main(int argc, char* argv[])
{
printf("RegEx test 4/6/2018\n");
std::tr1::regex::flag_type flags = std::tr1::regex::extended; //
necessary for error
myRegex *myRegex_p = new myRegex;
myRegex_p->regexObject.assign("foo", flags);
delete myRegex_p;
return 0;
}
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of Charles Mills
Sent: Friday, April 6, 2018 6:00 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Any C++ regex template class gotchas?
X-posted to IBM-MAIN and MVS-OE. (The latter seems more appropriate but the
former has more traffic by far.)
I'm trying to use the C++ template class regex for the first time. I have
code that works without any hint of an error on Windows but I am getting a
S0C4 on z/OS when the destructor calls some routine in the LE runtime
library. I've put in typical debugging checks for storage overlays with no
hint of an error.
Anyone know of any particular gotchas relative to the regex class for z/OS
C++?
--
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send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
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Re: Any C++ regex template class gotchas?
David -
Thanks for everything. I guess I will PMR it. As pointed out in another thread,
the PMR process is painful. It does me little good because I can't ship a
product that requires some obscure PTF -- the sales team would kill me.
Nah, the tr1 doesn't bother me. It's like having to code those pesky semicolons
or those pesky double equal signs. It is what it is. My Visual Studio accepts
but does not require the tr1:: for regex. I use Visual Assist and it tends to
autocomplete these things for me anyway, so it is little trouble.
I used namespace when I started out in C++ but then decided I was collapsing
the name space. I would rather have to code std:: every time than to have some
weird problem caused by an unexpected symbol name duplication.
I use auto sometimes but tend not to think to use it except in template
functions and that sort of thing.
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of David Crayford
Sent: Monday, April 9, 2018 12:38 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Any C++ regex template class gotchas?
Charles,
Do you get fed up with having to specify the pesky tr1 namespace? It makes it
difficult to share code between z/OS and distributed. You can work around that
with a useful namespace declaration.
Also, if you are using LANGLVL(EXTENDED0X) you can significantly cut down on
the verbosity of variable definitions by using auto type inference.
#include // bring C stdio runtime into the std namespace
#define __IBMCPP_TR1__ 1
#include
namespace std { using namespace tr1; } // be gone pesky tr1 namespace
struct myRegex
{
std::regex regexObject;
};
int main(int argc, char* argv[])
{
printf("RegEx test 4/6/2018\n");
auto flags = std::regex::extended; // necessary for error
auto *myRegex_p = new myRegex;
myRegex_p->regexObject.assign("foo", flags);
delete myRegex_p;
return 0;
}
On 9/04/2018 2:09 AM, Charles Mills wrote:
> Believe it or not, it appears to be a bug in the C++ runtime. Anyone
> who wants to prove me wrong is welcome to try the below. I have tested
> only on z/OS V2R2.
>
> #include
>
> #define __IBMCPP_TR1__ 1
> #include
>
> class myRegex
> {
> public:
> std::tr1::regex regexObject;
> };
>
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Re: Any C++ regex template class gotchas?
On 9/04/2018 7:55 PM, Charles Mills wrote:
David -
Thanks for everything. I guess I will PMR it. As pointed out in another thread,
the PMR process is painful. It does me little good because I can't ship a
product that requires some obscure PTF -- the sales team would kill me.
I feel your pain.
Nah, the tr1 doesn't bother me. It's like having to code those pesky semicolons
or those pesky double equal signs. It is what it is. My Visual Studio accepts
but does not require the tr1:: for regex. I use Visual Assist and it tends to
autocomplete these things for me anyway, so it is little trouble.
I used namespace when I started out in C++ but then decided I was collapsing
the name space. I would rather have to code std:: every time than to have some
weird problem caused by an unexpected symbol name duplication.
Me too. I avoid usings like "using namespace std". The using I posted
brings the tr1 namespace into std so I can use std::regex and not
std::tr1::regex. I don't use visual studio and clang and g++ require
including special headers like which I would rather not do.
I use auto sometimes but tend not to think to use it except in template
functions and that sort of thing.
auto has moved on significantly since C++14 and C++17 and you can now
define a function with an auto return value. It's also important for
lambda's. Especially useful for iterators so you don't have to code
something like std::unsorted_map::iterator or use
typedefs.
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of David Crayford
Sent: Monday, April 9, 2018 12:38 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Any C++ regex template class gotchas?
Charles,
Do you get fed up with having to specify the pesky tr1 namespace? It makes it
difficult to share code between z/OS and distributed. You can work around that
with a useful namespace declaration.
Also, if you are using LANGLVL(EXTENDED0X) you can significantly cut down on
the verbosity of variable definitions by using auto type inference.
#include // bring C stdio runtime into the std namespace
#define __IBMCPP_TR1__ 1
#include
namespace std { using namespace tr1; } // be gone pesky tr1 namespace
struct myRegex
{
std::regex regexObject;
};
int main(int argc, char* argv[])
{
printf("RegEx test 4/6/2018\n");
auto flags = std::regex::extended; // necessary for error
auto *myRegex_p = new myRegex;
myRegex_p->regexObject.assign("foo", flags);
delete myRegex_p;
return 0;
}
On 9/04/2018 2:09 AM, Charles Mills wrote:
Believe it or not, it appears to be a bug in the C++ runtime. Anyone
who wants to prove me wrong is welcome to try the below. I have tested
only on z/OS V2R2.
#include
#define __IBMCPP_TR1__ 1
#include
class myRegex
{
public:
std::tr1::regex regexObject;
};
--
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Re: Any C++ regex template class gotchas?
Works for me, using exactly the code posted, so it looks like something peculiar to your maintenance level. I'd open a PMR. make -k CHARSET=ebcdic xlC -Wc,phaseid -qebcdic -q64 -qnocse -qgonum -qbitfield=signed -qtarget=zosv2r2 -qarch=10 -qstrict \ -qfloat=ieee:nomaf -qlanglvl=extended0x -O2 -DNDEBUG -D__MV17195__ -D_XOPEN_SOURCE=600 -o test1 test1.cpp CCN(I) Product(5650-ZOS) Phase(CCNEOPTP) Level(D171026.Z2R2) CCN(I) Product(5650-ZOS) Phase(CCNDRVR ) Level(D171026.Z2R2) CCN(I) Product(5650-ZOS) Phase(CCNEPP ) Level(D171026.Z2R2) CCN(I) Product(5650-ZOS) Phase(CCNETBY ) Level(D171026.Z2R2) CCN(I) Product(5650-ZOS) Phase(CCNECWI ) Level(D171026.Z2R2) ./test1 RegEx test 4/6/2018 FWIW, it's a good idea to post the compile and link lines along with the source code, as they can dramatically affect the outcome. Good luck! -- Jerry -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
To clarify, by "works" you mean does NOT ABEND?
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of David Crayford
Sent: Sunday, April 8, 2018 7:02 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Any C++ regex template class gotchas?
Works ok for me. The code is sound so I would open a PMR.
On 9/04/2018 2:09 AM, Charles Mills wrote:
> #include
>
> #define __IBMCPP_TR1__ 1
> #include
>
> class myRegex
> {
> public:
> std::tr1::regex regexObject;
> };
>
> int main(int argc, char* argv[])
> {
> printf("RegEx test 4/6/2018\n");
> std::tr1::regex::flag_type flags = std::tr1::regex::extended; //
> necessary for error
> myRegex *myRegex_p = new myRegex;
> myRegex_p->regexObject.assign("foo", flags);
> delete myRegex_p;
> return 0;
> }
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Re: Any C++ regex template class gotchas?
I compile with JCL. Everyone laughs at me here if I say that, so I avoid mentioning it. Here are the compile options that I tested this with. OPT(0) NOINLINE TEST TARG(LE,zOSV1R13) ARCH(9) TUNE(10) GONUMBER NOTEMPL,OE,OBJ,HALT(8),LONGNAME LANGLVL(NEWEXCP,UCS,DOLLARINNAMES) RTTI ENUMSIZ(INT) AGGRCOPY HGPR LIBANSI ANSIALIAS UNROLL(YES) ROCONST SUPP(CCN5802) DLL(CBA) Charles -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Jerry Callen Sent: Monday, April 9, 2018 10:09 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Any C++ regex template class gotchas? Works for me, using exactly the code posted, so it looks like something peculiar to your maintenance level. I'd open a PMR. make -k CHARSET=ebcdic xlC -Wc,phaseid -qebcdic -q64 -qnocse -qgonum -qbitfield=signed -qtarget=zosv2r2 -qarch=10 -qstrict \ -qfloat=ieee:nomaf -qlanglvl=extended0x -O2 -DNDEBUG -D__MV17195__ -D_XOPEN_SOURCE=600 -o test1 test1.cpp CCN(I) Product(5650-ZOS) Phase(CCNEOPTP) Level(D171026.Z2R2) CCN(I) Product(5650-ZOS) Phase(CCNDRVR ) Level(D171026.Z2R2) CCN(I) Product(5650-ZOS) Phase(CCNEPP ) Level(D171026.Z2R2) CCN(I) Product(5650-ZOS) Phase(CCNETBY ) Level(D171026.Z2R2) CCN(I) Product(5650-ZOS) Phase(CCNECWI ) Level(D171026.Z2R2) ./test1 RegEx test 4/6/2018 FWIW, it's a good idea to post the compile and link lines along with the source code, as they can dramatically affect the outcome. Good luck! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
Auto seems to have some sort of limitations
auto regex_p = new std::tr1::regex("foo", flags);
"/u/xx/FEB2018/Source/SANDBOX.C", line 27.20: CCN5257 (S) An object or
reference of type "int" cannot be
initialized with an expression of type
"std::tr1::_EBCDIC::basic_regex > *".
z/OS V2R2
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of David Crayford
Sent: Monday, April 9, 2018 9:33 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Any C++ regex template class gotchas?
On 9/04/2018 7:55 PM, Charles Mills wrote:
> David -
>
> Thanks for everything. I guess I will PMR it. As pointed out in another
> thread, the PMR process is painful. It does me little good because I can't
> ship a product that requires some obscure PTF -- the sales team would kill me.
I feel your pain.
>
> Nah, the tr1 doesn't bother me. It's like having to code those pesky
> semicolons or those pesky double equal signs. It is what it is. My Visual
> Studio accepts but does not require the tr1:: for regex. I use Visual Assist
> and it tends to autocomplete these things for me anyway, so it is little
> trouble.
>
> I used namespace when I started out in C++ but then decided I was collapsing
> the name space. I would rather have to code std:: every time than to have
> some weird problem caused by an unexpected symbol name duplication.
Me too. I avoid usings like "using namespace std". The using I posted brings
the tr1 namespace into std so I can use std::regex and not std::tr1::regex. I
don't use visual studio and clang and g++ require including special headers
like which I would rather not do.
> I use auto sometimes but tend not to think to use it except in template
> functions and that sort of thing.
auto has moved on significantly since C++14 and C++17 and you can now define a
function with an auto return value. It's also important for lambda's.
Especially useful for iterators so you don't have to code something like
std::unsorted_map::iterator or use typedefs.
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Re: Any C++ regex template class gotchas?
Initializing in the constructor no help:
std::tr1::regex *regex_p = new std::tr1::regex("foo", flags);
// here we would use the regex
delete regex_p;
CEE3204S The system detected a protection exception (System Completion
Code=0C4).
From entry point
std::tr1::_EBCDIC::_Destroy(std::tr1::_EBCDIC::_Node_base*) at statement 40 at
compile unit
offset +0066 at entry offset +0066 at address 15E5C7CE.
Charles
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Re: Any C++ regex template class gotchas?
It seems that you don't have extended0x defined as regex_p is defaulting
to an integer.
On 10/04/2018 6:26 PM, Charles Mills wrote:
Auto seems to have some sort of limitations
auto regex_p = new std::tr1::regex("foo", flags);
"/u/xx/FEB2018/Source/SANDBOX.C", line 27.20: CCN5257 (S) An object or reference of
type "int" cannot be
initialized with an expression of type
"std::tr1::_EBCDIC::basic_regex > *".
z/OS V2R2
Charles
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of David Crayford
Sent: Monday, April 9, 2018 9:33 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Any C++ regex template class gotchas?
On 9/04/2018 7:55 PM, Charles Mills wrote:
David -
Thanks for everything. I guess I will PMR it. As pointed out in another thread,
the PMR process is painful. It does me little good because I can't ship a
product that requires some obscure PTF -- the sales team would kill me.
I feel your pain.
Nah, the tr1 doesn't bother me. It's like having to code those pesky semicolons
or those pesky double equal signs. It is what it is. My Visual Studio accepts
but does not require the tr1:: for regex. I use Visual Assist and it tends to
autocomplete these things for me anyway, so it is little trouble.
I used namespace when I started out in C++ but then decided I was collapsing
the name space. I would rather have to code std:: every time than to have some
weird problem caused by an unexpected symbol name duplication.
Me too. I avoid usings like "using namespace std". The using I posted brings the tr1
namespace into std so I can use std::regex and not std::tr1::regex. I don't use visual studio
and clang and g++ require including special headers like which I would rather
not do.
I use auto sometimes but tend not to think to use it except in template
functions and that sort of thing.
auto has moved on significantly since C++14 and C++17 and you can now define a
function with an auto return value. It's also important for lambda's. Especially
useful for iterators so you don't have to code something like
std::unsorted_map::iterator or use typedefs.
--
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send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
--
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Re: Any C++ regex template class gotchas?
That fixed it. Thanks, Charles -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of David Crayford Sent: Tuesday, April 10, 2018 8:31 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Any C++ regex template class gotchas? It seems that you don't have extended0x defined as regex_p is defaulting to an integer. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Any C++ regex template class gotchas?
On Mon, 9 Apr 2018 10:28:34 -0400, Charles Mills wrote: >To clarify, by "works" you mean does NOT ABEND? Oops, yes, I meant "does not ABEND". -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
