[Bug middle-end/55219] New: [4.7 regression] attempting to compile a pre-processed unit eats up memory until OOM kills the cc1 process

[matt at use dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55219



             Bug #: 55219

           Summary: [4.7 regression] attempting to compile a pre-processed

                    unit eats up memory until OOM kills the cc1 process

    Classification: Unclassified

           Product: gcc

           Version: 4.7.3

            Status: UNCONFIRMED

          Severity: critical

          Priority: P3

         Component: middle-end

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: m...@use.net





Created attachment 28623

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28623

preprocessed source that exhibits the OOM



With the attached pre-preprocessed source, every GCC since 4.6 eats up memory

until killed. This is reproducible at -O[0-3]. It gets up to 10GB of RAM before

it gets killed. GCC 4.5 (from branch, bootstrapped on same machine with similar

configure line) has no such issues.