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Bug 353864 - SDM double free or corruption (out) problem
Summary: SDM double free or corruption (out) problem
Status: RESOLVED FIXED
Alias: None
Product: PTP
Classification: Tools
Component: Debug SDM (show other bugs)
Version: 5.0.1   Edit
Hardware: PC Linux
: P3 normal (vote)
Target Milestone: 5.0.2   Edit
Assignee: Greg Watson CLA
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Reported: 2011-08-04 06:53 EDT by Adam Peplinski CLA
Modified: 2011-08-10 09:49 EDT (History)
1 user (show)

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Description Adam Peplinski CLA 2011-08-04 06:53:48 EDT 
Build Identifier: 20110615-0604

SDM breakks during the debugging of an example MPI fortran PI calcuation program (mpi_pi_example) with the error message:
*** glibc detected *** /home/adam/src/eclipse/plugins/org.eclipse.ptp.linux.x86_64_5.0.0.201106140904/bin/sdm: double free or corruption (out): 0x000000000112d860 ***

/lib/libc.so.6(+0x71ad6)[0x7fdf07a50ad6]

/lib/libc.so.6(cfree+0x6c)[0x7fdf07a5584c]

/home/adam/src/eclipse/plugins/org.eclipse.ptp.linux.x86_64_5.0.0.201106140904/bin/sdm[0x427499]

/home/adam/src/eclipse/plugins/org.eclipse.ptp.linux.x86_64_5.0.0.201106140904/bin/sdm[0x417439]
...

It happens after step into subroutine calc_pi. Moreover variable view doesn't sow in the readable way the values or types of variables declared in the program (e.g. "my_rank"; value "cb" ). After stepping into calc_pi subroutine only names for my_rank and num_procs are visible (no local variable present) and the execution of process rank 0 stops. It seem to happen for parallel fortran program only,  and the variable view works correctly for simple MPI C program. However, I din't test subroutines in MPI C.

Reproducible: Always

Steps to Reproduce:
1. Build example MPI fortran PI calculation 
2. Run parallel debugger and check variable view 
3. step into calc_pi
Comment 1 Greg Watson CLA 2011-08-04 07:58:22 EDT 
What are the versions of the Fortran compiler and gdb?
Comment 2 Adam Peplinski CLA 2011-08-04 10:29:08 EDT 
(In reply to comment #1)
> What are the versions of the Fortran compiler and gdb?

Its debian 2.6.32-5-amd64
gfortran 4.4.5
gdb 7.0.1
I tested C version of this program and there are no problems
Comment 3 Greg Watson CLA 2011-08-10 09:48:46 EDT 
Debugger was not correctly recognizing GNU kind notation. This solves the immediate issue, but I don't think fortran types are fully implemented, so other problems may occur.