Here is an excerpt from the analysis of build errors from the latest arvm7 run as built by linimon. The whole list is available.

• 29 invalid suffix on literal; C++11 requires a space between literal and identifier [-Wreserved-user-defined-literal]
• 20 non-constant-expression cannot be narrowed from type '[foo]' in initializer list [-Wc++11-narrowing]
• 15 invalid operands to binary expression ('[foo]')
• 12 constant expression evaluates to [foo] which cannot be narrowed to type '[foo]' [-Wc++11-narrowing]
• 9 comparison between pointer and integer ('[foo]')
• 8 assigning to '[foo]'
• 7 cannot initialize return object of type '[foo]'
• 6 no matching function for call to '[foo]'
• 5 unresolvable R_ARM_MOVW_ABS_NC relocation against symbol '[foo]'
• 3 in-class initializer for static data member of type '[foo]' specifier [-Wstatic-float-init]
• 3 UNREACHABLE executed at /tank/poudriere/jails/head-2018Q2-armv7/usr/src/contrib/llvm/lib/CodeGen/IfConversion.cpp:2004!