Compilation fails on 32bit / i686 systems #52

Compilation fails on 32bit / i686 systems:

touch build/101/rts/bc/bc/interpreter.c
building build/101/rts/bc/bc/interpreter.o
/nix/store/icgwaw22fjy9c50rwc334hsc68xrs2w2-clang-wrapper-3.5.0/bin/clang -I/tmp/nix-build-uhc-1.1.8.7.drv-0/uhc-0dec07e/EHC/install/101/shared/include/ -std=gnu99 -Wno-array-bounds  -fomit-frame-pointer -D__UHC_BUILDS_RTS__ -O3 -D__UHC_TARGET_BC__ -D__UHC_TARGET__=bc -o build/101/rts/bc/bc/interpreter.o -c build/101/rts/bc/bc/interpreter.c
build/101/rts/bc/bc/interpreter.c:317:1: warning: control may reach end of non-void function [-Wreturn-type]
}
^
fatal error: error in backend: Invalid register name global variable
clang-3.5: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 3.5.0 (tags/RELEASE_350/final)
Target: i386-pc-linux-gnu
Thread model: posix
clang-3.5: note: diagnostic msg: PLEASE submit a bug report to  and include the crash backtrace, preprocessed source, and associated run script.
clang-3.5: note: diagnostic msg: 

Full log:
http://hydra.nixos.org/build/20345965/log/raw

I don't care if this gets fixed or not, but I'm opening the issue anyway in case somebody else runs into the same problem. Feel free to close.