[Bug tree-optimization/57698] New: rev.200179 causes many errors (inlining failures) when building Firefox

[markus at trippelsdorf dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57698

            Bug ID: 57698
           Summary: rev.200179 causes many errors (inlining failures) when
                    building Firefox
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: markus at trippelsdorf dot de

I cannot build Firefox anymore with trunk because of inline errors, e.g.:

/home/markus/mozilla-central/js/src/jsapi.h: In function
‘js::regexp_exec(JSContext*, unsigned int, JS::Value*)’:
/home/markus/mozilla-central/js/src/builtin/RegExp.cpp:307:1: error: inlining
failed in call to always_inline ‘IsRegExp(JS::Value const&)’: indirect function
call with a yet undetermined callee
 IsRegExp(const Value &v)
 ^
In file included from /home/markus/mozilla-central/js/src/jsprvtd.h:24:0,
                 from /home/markus/mozilla-central/js/src/builtin/RegExp.h:10,
                 from /home/markus/mozilla-central/js/src/builtin/RegExp.cpp:7:
/home/markus/mozilla-central/js/src/jsapi.h:706:5: error: called from here
     if (Test(thisv))

IMO that is to aggressive (and will affect many projects). 
Wouldn't a simple warning be enough?