http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56698
--- Comment #4 from Mike Hommey <mh+gcc at glandium dot org> 2013-04-03 18:35:14 UTC --- Created attachment 29800 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29800 nsDiskCacheMap.gcda I can reproduce with the preprocessed file and this gcda with gcc 4.7.2-5 from debian unstable with the following command line: g++ -o nsDiskCacheMap.o -c -fPIC -Wall -Wno-invalid-offsetof -fno-exceptions -fno-strict-aliasing -fno-rtti -fno-exceptions -std=gnu++0x -pipe -g -fprofile-use -fprofile-correction -Wcoverage-mismatch -O3 -fno-omit-frame-pointer -Werror -Wno-error=uninitialized -Wno-error=deprecated-declarations nsDiskCacheMap.ii
