[Bug lto/78834] New: ICE if I try to opt-out from -flto using pragma

[_vi at list dot ru]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78834

            Bug ID: 78834
           Summary: ICE if I try to opt-out from -flto using pragma
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, lto
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: _vi at list dot ru
  Target Milestone: ---

// /usr/lib/gcc/x86_64-linux-gnu/4.9/cc1plus -quiet -imultiarch
x86_64-linux-gnu -D_GNU_SOURCE q.cpp -quiet -dumpbase q.cpp -mtune=generic
-march=x86-64 -auxbase-strip qqq.o -flto -o - -frandom-seed=0
# 1 "q.cpp"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 1 "<command-line>" 2
# 1 "q.cpp"
#pragma GCC optimize("-fno-lto")

int main() {
    return 0;
}

$ gcc --version
gcc (Debian 4.9.2-10) 4.9.2


I expect this pragma to negate "-flto" for this particular file.