[Bug target/49821] New: [4.6 regression] ICE in dwarf2out_cfi_begin_epilogue, at dwarf2out.c:3015

[doko at ubuntu dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49821

           Summary: [4.6 regression] ICE in dwarf2out_cfi_begin_epilogue,
                    at dwarf2out.c:3015
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: d...@ubuntu.com
            Target: ia64-linux-gnu


Created attachment 24813
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24813
preprocessed source

[forwarded from http://bugs.debian.org/635153]

fails with 4.6 branch 20110714, works with 4.5 branch. Either omitting
-fvisibility=hidden or changing the optimization level to -O/-O2 works around
the issue.

$ g++ -c -fvisibility=hidden -g -Os nsRuleNode.i 
In file included from nsRuleNode.cpp:82:0:
CSSCalc.h: In function 'typename CalcOps::result_type
mozilla::css::ComputeCalc(const typename CalcOps::input_type&, CalcOps&) [with
CalcOps = CalcLengthCalcOps, typename CalcOps::result_type = int, typename
CalcOps::input_type = nsCSSValue]':
CSSCalc.h:144:1: internal compiler error: in dwarf2out_cfi_begin_epilogue, at
dwarf2out.c:3015
Please submit a full bug report,
with preprocessed source if appropriate.