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R-2.12.0 problem on Sparc Solaris 10

I don't see enough information to help here, and this is rather 
an R-devel topic (see the posting guide for the difference).

Which compiler and which version?
What level of optimization and other compiler flags?
32- or 64-bit build?

The Sun Studio compiler works (see the R-admin manual and the package 
tests on CRAN), but Matrix does segfault in its tests on 32-bit 
Sparc.

32-bit gcc is less reliable, but it is currently working for me with 
gcc 4.3.3 from OpenCSW.

As a first step, compare the flags you used with those documented in 
the R-admin manual, and perhaps try minimal levels of optimization.
And please follow up to R-devel.
On Tue, 9 Nov 2010, Zhang,Jun wrote: