[Bug c++/70403] New: A null pointer check removed with -O2 even with -fno-delete-null-pointers-checks

Severity: major Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: thadula at ciena dot com Target Milestone: --- g++, powerpc-e500-linux-gnuspe-g++, version 4.9.2 compiled with -O2 and -fno-delete-null-pointers-checks Code (look for

[Bug c++/70403] A null pointer check removed with -O2 even with -fno-delete-null-pointers-checks

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70403 --- Comment #2 from Hadula, Tomasz --- The whole thing is huge (compiles for almost 2 hours). The problem is that when I attempt to make it smaller in form of a simple, standalone app, the problem doesn't happen anymore. I've been searching for

[Bug c++/70403] A null pointer check removed with -O2 even with -fno-delete-null-pointers-checks

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70403 --- Comment #4 from Hadula, Tomasz --- Created attachment 38085 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38085&action=edit output from -fdump-tree-optimized I attached dump from -fdump-tree-optimized for the affected source (NewLogic

[Bug c++/70403] A null pointer check removed with -O2 even with -fno-delete-null-pointers-checks

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70403 --- Comment #5 from Hadula, Tomasz --- Created attachment 38086 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38086&action=edit Original and preprocessed source generated with -E

[Bug c++/70403] A null pointer check removed with -O2 even with -fno-delete-null-pointer-checks

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70403 --- Comment #6 from Hadula, Tomasz --- Created attachment 38093 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38093&action=edit Output from gcc -v -save-temps Generated by g++ -v -save-temps

[Bug c++/70403] A null pointer check removed with -O2 even with -fno-delete-null-pointer-checks

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70403 --- Comment #7 from Hadula, Tomasz --- Created attachment 38094 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38094&action=edit Preprocessed source generated by gcc -v -save-temps Unfortunately I had to compress it with gzip as the file s

[Bug c++/70403] A null pointer check removed with -O2 even with -fno-delete-null-pointer-checks

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70403 --- Comment #8 from Hadula, Tomasz --- When I compile with devirtualization disabled (i.e. with -fno-devirtualize) the null pointer check is where it was supposed to be. Any clue why?

[Bug c++/70403] A null pointer check removed with -O2 even with -fno-delete-null-pointer-checks

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70403 --- Comment #9 from Hadula, Tomasz --- Created attachment 38148 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38148&action=edit Reduced testcase I reduced the size of the testcase

[Bug c++/70403] A null pointer check removed with -O2 even with -fno-delete-null-pointer-checks

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70403 --- Comment #12 from Hadula, Tomasz --- > The reduced testcase doesn't have the pattern you describe in > the description. Well, of course, I couldn't verify that for sure, because the reduced testcase was so severely mutilated that I couldn't p