Bug#691709: gccgo: Concurrent pi example runs out of memory
Package: gccgo-4.7
Version: 4.7.2-4
Severity: normal
Dear Maintainer,
Compiling and running the "concurrent pi" example from golang.org under
PowerPC results in the following error (cpi.go below contains concurrent pi
example code):
----
$ gccgo-4.7 cpi.go
~
$ ./a.out
runtime: memory allocated by OS (0x9ff57000) not in usable range [0x20100000,0xa0100000)
runtime: out of memory: cannot allocate 2097152-byte block (1739587584 in use)
throw: out of memory
goroutine 1 [running]:
goroutine 2 [syscall]:
no stack trace available
goroutine 3 [runnable]:
panic during panic
$ echo $?
3
----
This doesn't happen with the same version of gccgo under x86_64. The host has
1+ GiB RAM + 2 GiB swap (mostly free) so I don't think it's an actual memory
shortage. Nonetheless, lowering the number of spawned goroutines to 825 makes
the program run (> 825 crashes it, all regardless of free system memory).
Thanks!
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: powerpc (ppc)
Kernel: Linux 3.2.0-4-powerpc
Locale: LANG=ca_ES.UTF-8, LC_CTYPE=ca_ES.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages gccgo-4.7 depends on:
ii gcc-4.7 4.7.2-4
ii gcc-4.7-base 4.7.2-4
ii libc6 2.13-35
ii libc6-dev 2.13-35
ii libgmp10 2:5.0.5+dfsg-2
ii libgo0 4.7.2-4
ii libmpc2 0.9-4
ii libmpfr4 3.1.0-5
ii zlib1g 1:1.2.7.dfsg-13
gccgo-4.7 recommends no packages.
Versions of packages gccgo-4.7 suggests:
ii gccgo-4.7-doc 4.7.2-1
ii libgo0-dbg 4.7.2-4
-- no debconf information
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