Library

• Support double-quotes in TSO and BATCH parm strings. The double-quotes allow for arbitrary strings to become an argv value and can include commas, as in PARM='"my,parm1",parm2'. In this case, argv[] would be { "my,parm1", "parm2" }.

   

• Support for setting the argv delimiter via the new __argvc variable.

   

• The scanf() family of functions now supports more C99-specified conversions, including the hh, j, ll, t and z modifiers. Also, many of the older compatibility conversions were removed. %E and %F now follow ANSI rules.

   

• New popen()/pclose() functions for POSIX environments.

Utilities

• PLINK now has a new -uu option. -uu operates exactly as -u, except that the return code will be unaffected by unresolved references.

   

• PLINK will now generate sequence numbers on XSD or ESD-style output files. For some situations (but not all) the binder will include those sequence numbers in error messages, which can help in diagnosing binder (or PLINK) issues.

   

• PLINK now has a -bvse option, which causes it to do full binding of the modules and produce a VSE "unloaded" PHASE file.

   

• D2S has a new -dint option that treats 'D'-type fields as 8-byte integers instead of 8-byte floating point values.

C Compiler

• New -fpack option to specify per-compilation structure member alignment.

   

• Support for reading #include files from PDS members under OpenEdition.

   

• Support for -frsa=NNN to provide the user a mechanism for defining the per-function register-save-area. Support for 128-bit (long double) floating point data type.

   

• #pragma linkage values can now also apply to function typedefs, to support building function pointers that have different linkage conventions.

   

• New -march=esa390 option; causes the compiler to use halfword immediate instructions, use string instructions and to assume 16 floating-pt registers. Enabled by default with -flinux is specified.

   

• New state-of-the-art register allocation algorithms, greatly improving register use in the generated code.

C Compiler:

• New message #2399 - non-constant member-designator in offsetof

PLINK:

• New -showctl option that causes PLINK to display any control cards encountered during linking.

Library:

• When the AMODE is 24, POSIX functions now graciously fail instead of ABENDing.

   

• OPEN processing dynamically moved below-the-line for MSP support.

   

• O_CREAT and O_EXCL flags in open(2) now supported for dynamically allocating MVS file-system files. Also - several new attribute values pertinent to specifying sizes and file attributes when creating files.

   

• New binary tree creation/deletion/manipulation routines, tdelete(3), tfind(3), tsearch(3), twalk(3).

   

• New BSD 4.3 compatibility functions, lsearch(3) and lfind(3) for linear searching.

   

• New XPG4.2 hcreate(3)/hsearch(3) and hdestroy(3) hash-table manipulation functions.

   

• New fldata() function which returns low-level information for open file descriptors.

   

• New fseeko() and ftello() functions from Version 2 of the Single UNIX Specification (SUSv2).

   

• New re-entrant time routines - asctime_r(), ctime_r(), gmtime_r() and localtime_r(). Also added timegm(). (See ctime(3).)

   

• New POSIX.2 functions glob(3) and fnmatch(3).

   

• MVS 3.8 objects were moved to their own directories/PDSs, so linking for MVS 3.8 simply becomes a matter of choosing the right PDS concatenation or PLINK search order.

C Compiler:

• If -march=zarch is specified, the compiler will predefine the macro _LP64 to 1; otherwise, it defines the _ILP32 macro to 1.

   

• New -fcodepage500 option on EBCDIC platforms to support source in IBM-500 codepage. New #pragma filetag supported on EBCDIC platforms to indicate the source code code-page.

   

• Constant modulus by power-of-two (either signed or unsigned) is now optimized in the code-generator.

   

• When -fc370 is not specified, the compiler recognizes #pragma pack(pop) as a equivalent to #pragma pack(reset).

   

• Compiler now supports the IBM/Microsoft __FUNCTION__ predefined identifier. This is replaced with a string constant that is the name of the current function.

   

• Compiler was changed to define the name of the function (in Systems/C mode) in a compiler-generated character string that preceeds the function prologue. Then, a new LNAMEADDR= parameter was added to DCCPRLG which provides the label for this string. This allows the string to be as long as necessary, and contain any required bytes, and also be properly demangled in the C++ case. This significantly enhances the __traceback function. Improved code generation for passing constant parameters to functions, particularly in Linux mode.

   

• New -fc370=z1r2 option, to indicate compatibility with the IBM V1R2 z/OS compiler.

   

• New messages # 2356, #2357, #2097, #2098, #2168, #2169, #2371.

   

• Improvements in Linux compatibilty to be compatible with GCC 3.2 and later.

Library:

• The getprogname() and setprogname() functions were added.

   

• Support for new __jobname(), __stepname(), __procname(), __get_cpuid(), __isPosixOn() functions.

   

• Support for POSIX/UNIX functions: _exit(), getpid(), getppid(), pipe(), getcwd(), getlogin(), uname(), fork(), exec*(), execve(), wait(), waitpid(), wait3(), getgid(), setgid(), getegid(), setegid(), getuid(), setuid(), geteuid(), seteuid(), setreuid(), setregid(), getpwent(), setpassent(), setpwent(), endpwent(), getpwnam(), getpwuid(), getgrent(), setgroupent(), setgrent(), endgrent(), getgrnam(), getgruid(), getpid(), getppidd(), getcwd(), getwd(), getgroups(), setgroups(), getpriority(), setpriority(), nice(), getpgrp(), setpgrp(), getpgid(), setpgid(), getsid(), setsid(), getrusage(), kill(), times(), __passwd(), realpath(), mmap(), mprotect(), msync(), munmap(), ftok(), shmat(), shmdt(), shmget(), shmctl(), msgget(), msgctl(), msgrcv(), msgsnd(), system(), semctl(), semop(), semget(), ptsname(), grantpt(), unlockpt(), tcsendbreak(), tcdrain(), tcflow(), tcflush(), tcgetattr(), tcsetattr(), tcgetpgrp(), tcsetpgrp(), cfgetispeed(), cfsetispeed(), cfgetospeed(), cfsetospeed(), cfsetspeed(), and cfmakeraw().

   

• Support for HFS file system I/O functions: open(), read(), write(), close(), lseek(), unlink(), rename(), isatty(), fcntl(), rmdir(), mkdir(), access(), fsync(), umask(), fstat(), stat(), lstat(), link(), symlink(), readlink(), mknod(), mkfifo(), opendir(), readdir(), rewinddir(), closedir(), chown(), fchown(), lchown(), chmod(), fchmod(), chdir(), fchdir(), chroot(), truncate(), ftruncate(), pathconf(), fpathconf() utime(), utimes() and futimes().

   

• Support for executing 31-bit and 64-bit Systems/C programs under OpenEdition (via execve().)

   

• New C99 <inttypes.h> file, and the imaxabs(), imaxdiv(), stroimax(), stroumax(), wcstoimax() and wcstoumax() functions from section 7.8.2 of the ANSI C99 standard.

   

• New C99 <wctype.h> and <wchar.h> and the associated functions from there (section 7.25 of the C99 standard), including iswalnum(), iswalpha(), iswascii(), iswblank(), iswcntrl(), iswdigit(), iswgraph(), iswhexnumber(), iswideogram(), iswlower(), iswnumber(), iswphonogram(), iswprint(), iswpunct(), iswrune(), iswspace(), iswspecial(), iswupper(), iswxdigit(), towlower(), towupper(), wctrans(), towctrans(), wcwidth(), wctype(), iswctype(), wcstoul(), wcstol(), wcstoll() and wcstoull().

   

• The default buffer size for STDIO files was increased from 1024 bytes to 8192 bytes, to improve I/O performance. //HFS:-style files use the fstat() function to determine optimimum buffer sizes, particularly in network situations.

   

• optimizations for multiple SEEK_ENDs on the same read-only non-//HFS: files. Also, further optimizations to avoid redundant NOTEs.

   

• New signal-related external variables, sys_signame[], sys_siglist[] and sys_nsig;

   

• New single/linked/circular list and queue functions (see QUEUE(3) in the Systems/C library manual).

   

• The library has been updated to be "thread-aware", although a general pthreads library has not been implemented.

   

• The resolver routines now support the DOMAIN statement as well as DOMAINORIGIN in the TCPIP.DATA file.

   

• New sysconf() function to provide partial POSIX compatibility in non-POSIX environments.

   

• New TCP/IP related functions - getipnodebyname(), getipnodebyaddr(), and freehostent().

   

• The ANSI C99 standard strtoll(), strtoull() are provided (the previous non-standard strtoq() and strtouq() are still provided for backwards compatibility.)

   

• New wide-char and string functions: strcasestr(), wcscat(), wcslcpy(), wcsrchr(), wmemcpy(), strlcat(), wcschr(), wcslen(), wcsspn(), wmemmove(), strlcpy(), wcscmp(), wcsncat(), wcsstr(), wmemset(), strmode(), wcscpy(), wcsncmp(), wcswidth(), strnstr(), wcscspn(), wcsncpy(), wmemchr(), strsignal(), wcslcat(), wcspbrk() and wmemcmp().

   

• New ctype related functions: digittoint(), ishexnumber(), isideogram(), isnumber(), isphonogram(), isrune() and isspecial().

   

• New ddnfind()/ddnnext() functions which determine the DSN associated with a DD.

Utilities:

• PLINK is now able to directly produce a load module on cross-platform hosts, using the TSO transmit format.

   

• New PLINK option -DD=name=template which specifies a search pattern template to use processing an INCLUDE card with a DDNAME(MEM)-style name.

   

• PLINK now supports pre-linking/producing IBM DLLs in IBM compatibility mode.

   

• New -elc/-xelc options in D2S to enable lower-casing of EQU/SECTION names.

   

• New -bfstruct/-xbfstruct option in D2S to control the generation of bitfield-populated structures for odd-sized data (e.g. XL3 will be translated to struct { unsigned BF : 24; }.

   

• D2S now generates comments to show the original type.

Library:

• A rename() function has been added which can rename DSN-style files.
• New ASCII<->EBCDIC translation functions (see the ATOE(3) section in the Systems/C C library manual.)

Utilities:

• PLINK has been rewritten to do more "linking" on its own. In particular, the GOFF2XSD utility is now no longer required, as PLINK will accept GOFF input.

  Also - by default, PLINK will process all defined "dummy" sections creating a PRV table. This allows reentrant programs to be generated for systems the use older versions of the IBM linker that don't support a Psuedo Register Vector larger than 4K (e.g. VSE and older CMS.)

  PLINK will also eliminate duplicately defined weak functions in Systems/C programs (mostly used for C++ templates.) PLINK will remove the bytes from the generated TXT sections, signifcantly reducing the resulting load-module size.

  Furthermore, PLINK (and DAR/DRANLIB) can now handle IBM C objects. When an IBM compatible object is discovered, PLINK mimics the IBM Pre-Linker. Thus, all IBM pre-linking functions can be accomplished on a cross-platform host.

Compiler:

• Support for defining #pragma weak functions in Systems/C mode. (The new version of PLINK will automatically remove duplicate weak definitions and eliminate the duplicate code from the resulting load module.) This is also employed for proper handling of C++ automatic template instantiation.
• New -finstrument_functions option. For Linux (-flinux), this decorates function entry/exit points compatibly with the normal Linux utilities. In Systems/C mode, this causes macros to be generated a function entry/exit points.
• New -fstructmap/-fno_structmap option to enable/disable the "structure map" portion of the listing.
• New -fasmcomm option in the C compiler, which describes how the original C lines should appear in the generated assembler output.
• New -fasmlnno