[Bug c++/49351] Internal error: Segmentation fault (program cc1plus)

[michael at jarvis dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49351

--- Comment #9 from Mike Jarvis <michael at jarvis dot net> 2011-06-10 21:47:37 UTC ---
That worked.  So I guess g++ is exceeding the stack limit and crashing, not the
heap memory.

$ ulimit -aH
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) unlimited
pipe size            (512 bytes, -p) 1
stack size              (kbytes, -s) 65532
cpu time               (seconds, -t) unlimited
max user processes              (-u) 532
virtual memory          (kbytes, -v) unlimited

$ ulimit -s 65532

$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 256
pipe size            (512 bytes, -p) 1
stack size              (kbytes, -s) 65532
cpu time               (seconds, -t) unlimited
max user processes              (-u) 266
virtual memory          (kbytes, -v) unlimited

$ g++-4 -c TMV_TestSmallMatrixArith_6f.ii
$

I guess this is still a bug, so I won't close it.  But I don't know how easy it
would be for gcc to tell when it is going to exceed the stack limit and modify
behavior accordingly.  Or at least to give a useful error message that the
stack size needs to be increased.

But regardless, thank you for your help in diagnosing the problem.  (And yes,
it did end up using close to 4 GB.)