[Bug debug/61033] New: Infinite loop in variable tracking

[michael.collison at linaro dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61033

            Bug ID: 61033
           Summary: Infinite loop in variable tracking
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
          Assignee: unassigned at gcc dot gnu.org
          Reporter: michael.collison at linaro dot org

Created attachment 32722
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32722&action=edit
Preprocssed file to reproduce bug

Data flow analysis in variable tracking does not converge and causes an
infinite loop with the attached file and following compile options:

./cc1plus -quiet -fpreprocessed qmltextgenerator.ii -dumpbase
qmltextgenerator.ii -march=armv4t -mfloat-abi=soft -mtls-dialect=gnu
-auxbase-strip x.o -g -O2 -Wformat=1 -Werror=format-security -Wall -Wextra
-version -fstack-protector -fvisibility=hidden -fvisibility-inlines-hidden
-fPIC --param ssp-buffer-size=4 -o qmltextgenerator.s

GCC configured with --target=arm-linux-gnueabi