http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59733
--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Kostya Serebryany from comment #9) > > It still fails for me. It has nothing to do with "make -jN". When I > > I tried running this on the fresh gcc trunk. > > During the 3-rd stage I get this: > checking how to run the C preprocessor... ../libiberty/libiberty.a(regex.o): > In function `byte_compile_range': > ... gcc-boot/libiberty/../../gcc/libiberty/regex.c:4495: undefined reference > to `__asan_report_load1' Please try hjl/asan branch at http://gcc.gnu.org/git/?p=gcc.git;a=summary It fixes this problem among others.