https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100629
Bug ID: 100629
Summary: Regression from 10 symbol mismatch between class
definition and use with optimization
Product: gcc
Version: 11.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mckelvey at maskull dot com
Target Milestone: ---
Created attachment 50820
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50820&action=edit
Source of Break class
On gcc-11/12 I get undefined symbols on link. Like this:
/usr/bin/ld: header_edit.o:header_edit.cc:(.text.startup+0x36a): undefined
reference to
`_ZN13PatternDriver12BreakPatternC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERKNS_26ConflateIntegerScalarValueESB_RKNS_12TemplateEnumIL_ZNS_16complement_namesB5cxx11EEL_ZNS_14COMPLEMENTENUMEEEE'
>From main program header_edit.o:
_ZN13PatternDriver12BreakPatternC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERKNS_26ConflateIntegerScalarValueESB_RKNS_12TemplateEnumIL_ZNS_16complement_namesB5cxx11EEL_ZNS_14COMPLEMENTENUMEEEE
from BreakPattern.o:
_ZN13PatternDriver12BreakPatternC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERKNS_26ConflateIntegerScalarValueESB_RKNS_12TemplateEnumIL_ZNS_16complement_namesEEL_ZNS_14COMPLEMENTENUMEEEE
The problem is that the second string has the sequence B5cxx11. That sequence
goes away when I change the optimization level from level 3 to default. I don't
know how to reduce to a simple test case.
