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PCRE-related compiler errors

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Posted by Silverwind   (13 posts)  [Biography] bio
Date Thu 18 Apr 2013 10:43 PM (UTC)
Message
Working with source for 4.90, attempting to compile with MSVC++ 6.0 with service pack 6.0 installed, the compiler tosses the following errors:

Utilities.cpp
[...]mushclient\pcre\pcre_internal.h(2327) : error C2371: 'real_pcre' : redefinition; different basic types
        [...]mushclient\pcre\pcre.h(309) : see declaration of 'real_pcre'
[...]mushclient\pcre\pcre_internal.h(2328) : error C2371: 'real_pcre16' : redefinition; different basic types
        [...]mushclient\pcre\pcre.h(312) : see declaration of 'real_pcre16'
[...]mushclient\pcre\pcre_internal.h(2351) : error C2027: use of undefined type 'real_pcre'
        [...]mushclient\pcre\pcre.h(309) : see declaration of 'real_pcre'
[...]mushclient\Utilities.cpp(2590) : error C2027: use of undefined type 'real_pcre'
        [...]mushclient\pcre\pcre.h(309) : see declaration of 'real_pcre'
[...]mushclient\Utilities.cpp(2590) : error C2227: left of '->options' must point to class/struct/union
lua_scripting.cpp
[...]mushclient\scripting\..\pcre\pcre_internal.h(2327) : error C2371: 'real_pcre' : redefinition; different basic types
        [...]mushclient\pcre\pcre.h(309) : see declaration of 'real_pcre'
[...]mushclient\scripting\..\pcre\pcre_internal.h(2328) : error C2371: 'real_pcre16' : redefinition; different basic types
        [...]mushclient\pcre\pcre.h(312) : see declaration of 'real_pcre16'
[...]mushclient\scripting\..\pcre\pcre_internal.h(2351) : error C2027: use of undefined type 'real_pcre'
        [...]mushclient\pcre\pcre.h(309) : see declaration of 'real_pcre'
[...]mushclient\scripting\lua_scripting.cpp(518) : error C2027: use of undefined type 'real_pcre'
        [...]mushclient\pcre\pcre.h(309) : see declaration of 'real_pcre'
[...]mushclient\scripting\lua_scripting.cpp(518) : error C2227: left of '->options' must point to class/struct/union
Generating Code...
Error executing cl.exe.

MUSHclient.exe - 10 error(s), 0 warning(s)
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Posted by Nick Gammon   Australia  (21,322 posts)  [Biography] bio   Forum Administrator
Date Reply #1 on Fri 19 Apr 2013 10:51 PM (UTC)
Message
I seem to recall getting this a year or so ago but can't remember how I fixed it. I note that:


#if defined COMPILE_PCRE8
#define REAL_PCRE real_pcre
#elif defined COMPILE_PCRE16
#define REAL_PCRE real_pcre16
#elif defined COMPILE_PCRE32
#define REAL_PCRE real_pcre32
#endif


Try changing "real_pcre" to "REAL_PCRE", see if that helps.

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Silverwind   (13 posts)  [Biography] bio
Date Reply #2 on Sun 21 Apr 2013 06:21 AM (UTC)
Message
That didn't work. It still throws the exact same errors on all the same lines.
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Posted by Nick Gammon   Australia  (21,322 posts)  [Biography] bio   Forum Administrator
Date Reply #3 on Sun 21 Apr 2013 10:08 AM (UTC)
Message
I'm using Visual C++ 6.0.

It should compile OK.

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Nick Gammon   Australia  (21,322 posts)  [Biography] bio   Forum Administrator
Date Reply #4 on Sun 21 Apr 2013 10:09 AM (UTC)
Message
Which version of PCRE do you have?

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Silverwind   (13 posts)  [Biography] bio
Date Reply #5 on Sun 21 Apr 2013 09:47 PM (UTC)
Message
The one from the readme in the PCRE directory for the source:

ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.32.zip
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Posted by Silverwind   (13 posts)  [Biography] bio
Date Reply #6 on Sat 11 May 2013 06:13 PM (UTC)
Message
Any further ideas for this? I don't know what I could be doing wrong here. I've checked and doublechecked all the instructions in the Mushclient source package.
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Posted by Nick Gammon   Australia  (21,322 posts)  [Biography] bio   Forum Administrator
Date Reply #7 on Mon 13 May 2013 12:21 PM (UTC)

Amended on Mon 13 May 2013 12:23 PM (UTC) by Nick Gammon

Message
I did a "diff" on the changes between what I actually compiled with, and the 8.32 release:


diff -c /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_compile.c pcre/pcre_compile.c
*** /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_compile.c	Sun Nov 11 21:23:00 2012
--- pcre/pcre_compile.c	Wed Feb  6 08:49:15 2013
***************
*** 1,3 ****
--- 1,10 ----
+ #pragma warning( disable : 4018)  // '<' : signed/unsigned mismatch
+ #pragma warning( disable : 4127)  // conditional expression is constant
+ #pragma warning( disable : 4244)  // conversion from 'int' to 'unsigned short', possible loss of data
+ #pragma warning( disable : 4701)  // local variable 'othercase' may be used without having been initialized
+ #pragma warning( disable : 4702)  // unreachable code
+ 
+ 
  /*************************************************
  *      Perl-Compatible Regular Expressions       *
  *************************************************/
diff -c /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_dfa_exec.c pcre/pcre_dfa_exec.c
*** /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_dfa_exec.c	Sun Nov 11 21:23:00 2012
--- pcre/pcre_dfa_exec.c	Wed Feb  6 09:11:11 2013
***************
*** 1,3 ****
--- 1,6 ----
+ #pragma warning( disable : 4244)  // conversion from 'int' to 'unsigned short', possible loss of data
+ #pragma warning( disable : 4146)  // unary minus operator applied to unsigned type, result still unsigned
+ 
  /*************************************************
  *      Perl-Compatible Regular Expressions       *
  *************************************************/
diff -c /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_exec.c pcre/pcre_exec.c
*** /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_exec.c	Sun Nov 11 21:23:00 2012
--- pcre/pcre_exec.c	Wed Feb  6 08:50:10 2013
***************
*** 1,3 ****
--- 1,6 ----
+ #pragma warning( disable : 4127)  // conditional expression is constant
+ #pragma warning( disable : 4244)  // conversion from 'int' to 'unsigned short', possible loss of data
+ 
  /*************************************************
  *      Perl-Compatible Regular Expressions       *
  *************************************************/
diff -c /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_maketables.c pcre/pcre_maketables.c
*** /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_maketables.c	Wed Oct 17 17:14:00 2012
--- pcre/pcre_maketables.c	Wed Feb  6 08:49:38 2013
***************
*** 1,3 ****
--- 1,5 ----
+ #pragma warning( disable : 4244)  // conversion from 'int' to 'unsigned short', possible loss of data
+ 
  /*************************************************
  *      Perl-Compatible Regular Expressions       *
  *************************************************/
diff -c /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_ord2utf8.c pcre/pcre_ord2utf8.c
*** /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_ord2utf8.c	Sun Nov 11 21:23:00 2012
--- pcre/pcre_ord2utf8.c	Wed Feb  6 08:49:44 2013
***************
*** 1,3 ****
--- 1,5 ----
+ #pragma warning( disable : 4244)  // conversion from 'int' to 'unsigned short', possible loss of data
+ 
  /*************************************************
  *      Perl-Compatible Regular Expressions       *
  *************************************************/
diff -c /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_refcount.c pcre/pcre_refcount.c
*** /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_refcount.c	Wed Oct 17 17:14:00 2012
--- pcre/pcre_refcount.c	Wed Feb  6 08:49:50 2013
***************
*** 1,3 ****
--- 1,5 ----
+ #pragma warning( disable : 4244)  // conversion from 'int' to 'unsigned short', possible loss of data
+ 
  /*************************************************
  *      Perl-Compatible Regular Expressions       *
  *************************************************/
diff -c /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_study.c pcre/pcre_study.c
*** /c/Documents and Settings/Owner/Desktop/pcre-8.32/pcre_study.c	Sun Nov 11 21:23:00 2012
--- pcre/pcre_study.c	Wed Feb  6 08:49:55 2013
***************
*** 1,3 ****
--- 1,5 ----
+ #pragma warning( disable : 4244)  // conversion from 'int' to 'unsigned short', possible loss of data
+ 
  /*************************************************
  *      Perl-Compatible Regular Expressions       *
  *************************************************/


Nothing looks really relevant.

The only thing I can think of is the precompiled headers. Select all the PCRE files in the IDE and make sure that you have "Not using precompiled headers" selected.

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Silverwind   (13 posts)  [Biography] bio
Date Reply #8 on Tue 14 May 2013 04:46 PM (UTC)
Message
Those are all set up as they should be. :/ It confuses the hell out of me that files straight from the package are conflicting with /themselves/. Is there anything else that could be relevant here? I'm using MSVC++ 6.0 with Service Pack 6 on 64-bit Windows 7.
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Posted by Nick Gammon   Australia  (21,322 posts)  [Biography] bio   Forum Administrator
Date Reply #9 on Wed 15 May 2013 10:23 PM (UTC)
Message
I'm confused too because that is the compiler I have, and if you have the 4.90 source that is what I am using.

Can you confirm that in Utilities.cpp around line 2590 you have this exact code?


typedef unsigned char uschar;

int
njg_get_first_set(const pcre *code, const char *stringname, const int *ovector)
{
const real_pcre *re = (const real_pcre *)code;
int entrysize;
char *first, *last;
uschar *entry;
if ((re->options & (PCRE_DUPNAMES | PCRE_JCHANGED)) == 0)
  return pcre_get_stringnumber(code, stringname);
entrysize = pcre_get_stringtable_entries(code, stringname, &first, &last);
if (entrysize <= 0) return entrysize;
for (entry = (uschar *)first; entry <= (uschar *)last; entry += entrysize)
  {
  int n = (entry[0] << 8) + entry[1];
  if (ovector[n*2] >= 0) return n;
  }
return (first[0] << 8) + first[1];
}


- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Nick Gammon   Australia  (21,322 posts)  [Biography] bio   Forum Administrator
Date Reply #10 on Wed 15 May 2013 10:25 PM (UTC)
Message
Also did you do this step in the "readme" for the PCRE part of the project?

Quote:


(Note that config.h is part of the git repository)

4. Rename pcre_chartables.c.dist as pcre_chartables.c
Rename pcre.h.generic as pcre.h


- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Silverwind   (13 posts)  [Biography] bio
Date Reply #11 on Wed 15 May 2013 10:38 PM (UTC)
Message
Check and doublecheck. The compiler isn't even producing an error within utilities.cpp itself, it's a conflict between pcre.h and pcre_internal.h, both of which come from the PCRE package. I don't understand how with the same compiler, using the same sources and project files that this could be going on.
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Posted by Nick Gammon   Australia  (21,322 posts)  [Biography] bio   Forum Administrator
Date Reply #12 on Fri 17 May 2013 05:48 AM (UTC)

Amended on Fri 17 May 2013 05:49 AM (UTC) by Nick Gammon

Message
It is here:


[...]mushclient\Utilities.cpp(2590) : error C2027: use of undefined type 'real_pcre'
        [...]mushclient\pcre\pcre.h(309) : see declaration of 'real_pcre'


It says it is undefined, and then points to pcre.h line 309:


struct real_pcre8_or_16;                 /* declaration; the definition is private  */


OK, so that is a forwards declaration. However the real declaration seems to be at line 2309 of pcre_internal.h.


typedef struct real_pcre8_or_16 {
  pcre_uint32 magic_number;
  pcre_uint32 size;               /* Total that was malloced */
  pcre_uint32 options;            /* Public options */
  pcre_uint16 flags;              /* Private flags */
  pcre_uint16 max_lookbehind;     /* Longest lookbehind (characters) */
  pcre_uint16 top_bracket;        /* Highest numbered group */
  pcre_uint16 top_backref;        /* Highest numbered back reference */
  pcre_uint16 first_char;         /* Starting character */
  pcre_uint16 req_char;           /* This character must be seen */
  pcre_uint16 name_table_offset;  /* Offset to name table that follows */
  pcre_uint16 name_entry_size;    /* Size of any name items */
  pcre_uint16 name_count;         /* Number of name items */
  pcre_uint16 ref_count;          /* Reference count */
  const pcre_uint8 *tables;       /* Pointer to tables or NULL for std */
  const pcre_uint8 *nullpad;      /* NULL padding */
} real_pcre8_or_16;


- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Nick Gammon   Australia  (21,322 posts)  [Biography] bio   Forum Administrator
Date Reply #13 on Fri 17 May 2013 05:56 AM (UTC)

Amended on Fri 17 May 2013 05:57 AM (UTC) by Nick Gammon

Message
Try setting this define in project properties, if you haven't already:



For each of the .c file in the PCRE part, as highlighted (there would be a few more underneath).

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Silverwind   (13 posts)  [Biography] bio
Date Reply #14 on Sat 18 May 2013 12:56 AM (UTC)
Message
Already set across the board. :( I'm using the project/workspace files from the source package.
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