Sun Studio Express 3.09 Known Problems and Workarounds

Solaris Operating System

• Solaris OS CR 6567350
  CPC support for Intel Core2 processors causes HW counter-profiling on Intel Core2 and Xeon processors to fail.

Performance Analyzer

• Analyzer CR 6374102
  Collector misses lazily loaded objects, causes some data to be attributed to Unknown, when the library is lazily-loaded.
  Workaround Set LD_BIND_NOW to 1.

The following items detail the serious known problems with the MPI features implemented for this Express release.

• Analyzer CR 6696433
  collect emits spurious messages that inundate the output for high-np MPI jobs

• Analyzer CR 6698228
  The Add Experiment command does not correctly load MPI experiments after an experiment has been loaded.
  Workaround Use the Open Experiment command to load MPI experiments.

• Analyzer CR 6674802
  The Filter Data command does not work on MPI tabs.
  Workaround Use the MPI Chart Control and MPI Timeline Control tabs to filter MPI data.

• Analyzer CR 6718586
  The Event Timeline tab takes too long to show MPI experiments

• Analyzer CR 6675341
  The Event Timeline tab does not show correct timestamps for MPI events.
  Workaround Use the MPI Timeline tab instead of the event Timeline tab to view MPI data.

• Analyzer CR 6718626
  The MPI Timeline does not show connecting lines for MPI Collectives.

• Analyzer CR 6718638
  On Linux, the "MPI Wait" metric is undercounted if MPI sleeps rather than busy-waits.

• Analyzer CR 6671757
  Clock skew: multi-node-cluster timestamps should be consistent. Skew between nodes may cause messages to appear to go backwards in time.

C Compiler

• Default treatment of string literals by the C compiler can lead to segmentation faults.
  With this express release the Sun Studio C compiler now places string literals in read only memory by default. For C programs that modify string literals this can result in a segmentation fault. The best solution to the problem is to avoid this non-portable and undefined programming practice by correcting the program's code to avoid modifying a string literal. A work-around is to use the flag -features=no%conststrings which places string literals in writable memory.

• CR 6758500
  The C compiler cannot build 32-bit programs or libraries on 64-bit Ubuntu 8. Possible workaround is to add the /lib32 and /usr/lib32 directories to your PATH.

C++ Compiler

The default standard C++ library, libCst.so.1 provides functions that are not available in the library without the latest Solaris software patch for C++ runtime libraries. See CR 6761222.

The missing function are listed below:
bool std::operator==(const std::string, const char*);
bool std::operator==(const char*, const std::string);

Consequently, a C++ program that is built by using the November 2008 Sun Studio Express software, especially one compiled with -g, might not run on a system where the express software is not installed in the same location.

The following are possible workarounds:

1. Compile with -g0 instead of -g. This allows the compiler to generate the functions inline.
2. Install Sun Studio Express software in the same location on the target machine.
3. Copy the portion of the Sun Studio Express installation from SUNWspro/prod/usr/lib to the same location on the target machine.

The latest SUNWlibC patches for Solaris 10 have the fix for CR 6761222.

sparc: 119963-12
x86 : 119964-12

Install the patch on all target machines. Subsequently, no workarounds will be needed.

• CR 6758500
  The C++ compiler cannot build 32-bit programs or libraries on 64-bit Ubuntu 8. Possible workaround is to add the /lib32 and /usr/lib32 directories to your PATH.

Fortran Compiler

• Fortran: Quad Precision and -xtypemap on x64 platforms
  128-bit floating-point precision is supported in this release. However, the f95 command-line driver does not allow any -xtypemap combination that contains double:128. To work around this problem, a -qoption can be used to pass the -xtypemap option directly to the Fortran compiler until this is fixed. So, instead of using:
  f95 -xtypemap=real:64,double:128 foo.f90
  Use this instead:
  f95 -qoption f90comp -xtypemap=real:64,double:128 foo.f90

• Fortran CR 6673813
  Scoping bug in module internal procedures
  If an internal procedure inside a module procedure happens to have the same name as an array defined in the module then the internal procedure should be defined before it is referenced by other internal procedures inside the same module procedure for it to be correctly recognized

• Fortran CR 6674892
  f95 fails with an INTERNAL error when using DATE_AND_TIME(3F)
  Calling DATE_AND_TIME(3F) with allocatable arrays for arguments can cause the compiler to dump core. The workaround is not to use allocatable arrays when calling DATE_AND_TIME(3F).

dbx

• dbx CR 6563341
  dbx produces mismatched-checksum warnings during library loading on Ubuntu 8.

• dbx CR 6757670
  dbx hangs when debugging multi-threaded programs on 32-bit Red Hat Enterprise Linux 5.

• dbx CR 6741442
  dbx gives the message 'dbx: cannot determine return address - stack corrupted' after it displays a function while runtime checking is enabled on Red Hat Enterprise Linux 5 and SuSE Linux Enterprise Server 10.

• dbx CR 6694047
  dbx shows the stacktrace incorrectly while debugging a core file from a program that was compiled with g++ on Red Hat Enterprise Linux 5 and SuSE Linux Enterprise Server 10.

IDE

• IDE CR 6812675
  A registration exception window pops up every time the IDE is launched. This can be ignored and the pop-up window dismissed.

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