Heap corruption in mulithreaded program

Question

Hi,
We have a big mulithreaded program (on Solaris 8) which crashes randomly. The crash location varies every time. But, the top of the back trace is more or less the same every time. Is it heap corruption OR any known bugs in the libraries or platform OR ....? How to debug this kind of crashes ?
ff14262c realfree (1194f2f8, ff1c2858, ff1bc008, 119496f8, 5c01, 11949700) + 220
ff142d80 cleanfree (0, ff1bc008, ff1c27cc, ff1c284c, ff1c2844, 0) + 58
ff141eb4 mallocunlocked (32, ff021600, ff1bc008, 38, 0, 0) + f0
ff141da8 malloc (32, 7, 38d33, f8cfbac0, 0, 0) + 20
ff1d7078 void*operator new(unsigned) (32, 268078, 0, 137d4, ff1ea824, 30) + 2c
003f2cd4 __rwstd::__string_ref<char,std::char_traits<char>,std::allocator<char> >*std::basic_string<char,std::char_traits<char>,std::allocator<char> >::__getRep(unsigned,unsigned) (f8cfbbf4, 8, 8, 7efefeff, 81010100, ff00) + 168
003f3430 std::basic_string<char,std::char_traits<char>,std::allocator<char> >::basic_string #Nvariant 1(const char*,const std::allocator<char>&) (f8cfbbf4, f7a723d, f8cfbbf3, 4990090, c, 4) + a8
Thanks & Regards,
Ramesh.

Answer 1

bvramesh wrote:
I will check with my project to see if compiler can be upgraded. Any prerequisites for that ?List of patches required for particular Sun Studio version can be found here (look for SS... patches links):
http://developers.sun.com/sunstudio/support/matrix/index.jsp
(direct link for Sun Studio 11 - http://developers.sun.com/sunstudio/downloads/patches/ss11_patches.html)
bvramesh wrote:
Can we get the dbx for free (for Solaris 8 platform) OR we need license ?It is free for all uses, as Steve mentioned in the above post.
bvramesh wrote:
Where can I find the information ?Here's License Agreement for Sun Studio 11, if that's what you are looking for:
https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_Developer-Site/en_US/-/USD/ViewLicense-Start?LicenseUUID=0TLACUFBYoIAAAEYO5o5AXiO&ProductUUID=lAHACUFB31QAAAEYgUI5AXrt&cnum=&evsref=&sln=
bvramesh wrote:
Is it possible to use the latest dbx even if my application is compiled with very old compiler and old shared libraries (Forte 6 update1) ?Yes, as long as you are working on a platform where this version of dbx is supported.
bvramesh wrote:
By the way, what is the -fast option and -O3 option all about ?Here are excerpts from the man page (-O3 == -xO3):
               -xO3 In addition to optimization performed at the
                    -x02 level, also performs global common
                    subexpression elimination, global copy and
                    constant propagation, loop strength reduc-
                    tion, induction variable elimination, and
                    loop-variant optimization.
  -fast     Selects a combination of compilation options for
               optimum execution speed on the system upon which
               the code is being compiled.  This option provides
               near maximum performance for most applications by
               expanding the following compilation options:
               -dalign (SPARC only)
               -fns (SPARC only)
               -fsimple=2 (SPARC only)
               -ftrap=%none (SPARC, IA)
               -xlibmil (SPARC, IA)
               -nofstore (IA only)
               -xO5 (SPARC, IA)
               -xlibmopt (SPARC, IA)
               -xtarget=native (SPARC, IA)
               -xbuiltin=%all (SPARC, IA)