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toolchain/49425: internal compiler error compiling riscv userland

>Number:         49425
>Category:       toolchain
>Synopsis:       internal compiler error compiling riscv userland
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Nov 28 15:40:00 +0000 2014
>Originator:     Reinoud Zandijk
>Release:        NetBSD 7.99.1
System: NetBSD 7.99.1 NetBSD 7.99.1 (GENERIC) #1: Thu Oct 30 21:35:29 CET 2014 amd64
Architecture: x86_64
Machine: amd64

While trying to build the NetBSD userland part using 
   ./ -a riscv64 -m riscv -u build

The compilation terminates with:

dependall ===> lib/../external/gpl3/gcc/lib/libasan
#   compile  libasan/asan_allocator2.o
-frandom-seed=5fba94ba -O2 -Werror
-o asan_allocator2.o
In file included from
In function '__asan::AsanChunk*
internal compiler error: in gen_lowpart_general, at rtlhooks.c:59
   v = __sync_lock_test_and_set(&a->val_dont_use, v);
Please submit a full bug report,
with preprocessed source if appropriate.
See <> for instructions.

Just try to compile with -current src tree
internal gcc issue or hopefully fixed with gcc 4.9 ?


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