Ubuntu
llvm-toolchain-snapshot package

  1. Bug #1365701
  2. Comment #7

Comment 7 for bug 1365701

Revision history for this message
In , Tor Klingberg (tor-klingberg) wrote :

Created attachment 13004
The C source file that triggers the bug

When I try to compile a certain short C-file with clang for a 32-bit i386 target with optimization, I get this linker error:
/tmp/addup-b0948d.o:/home/tor/c/addup.c:function addup: error: undefined reference to '__multi3'

As I understand it, __multi3 is a 128-bit function, and not available on 32-bit i386. The C source does not use and 128-bit types, only 64-bit.

With the versions of clang-3.4 and 3.5 in the Ubuntu repositories, clang segfaults instead. Reported here: https://bugs.launchpad.net/ubuntu/+source/llvm-toolchain-snapshot/+bug/1365701