Apparent regression with NameError in 9.1.0.0 #3934
Description
Environment
Darwin Avis-Prudence.local 15.4.0 Darwin Kernel Version 15.4.0: Fri Feb 26 22:08:05 PST 2016; root:xnu-3248.40.184~3/RELEASE_X86_64 x86_64
Expected Behavior
The 9.0.5.0 behavior when referencing an undefined name:
$ ruby -v -e 'puts FooBar'
jruby 9.0.5.0 (2.2.3) 2016-01-26 7bee00d Java HotSpot(TM) 64-Bit Server VM 25.77-b03 on 1.8.0_77-b03 +jit [darwin-x86_64]
NameError: uninitialized constant FooBar
const_missing at org/jruby/RubyModule.java:3212
<top> at -e:1
I can see that a NameError occurs, which symbol is uninitialized, and the specific location where it was referenced.
Actual Behavior
$ ruby -v -e 'puts FooBar'
jruby 9.1.0.0 (2.3.0) 2016-05-02 a633c63 Java HotSpot(TM) 64-Bit Server VM 25.77-b03 on 1.8.0_77-b03 +jit [darwin-x86_64]
ArgumentError: too many arguments for format string
to_str at org/jruby/RubyNameError.java:130
to_s at org/jruby/RubyNameError.java:224
message at org/jruby/RubyException.java:149
The actual problem has been masked by this ArgumentError.