dereferencing pointer ‘({anonymous})’ does break strict-aliasing rules（Install version larger than 4.1.1 in centos6.8）

Big god, i am a novice, this hint, is there an impact?

In file included from include/jemalloc/internal/jemalloc_internal_decls.h:32,
from include/jemalloc/internal/jemalloc_internal.h:5,
from src/jemalloc.c:2:
/usr/include/stdlib.h: 在函数‘realloc’中:
src/jemalloc.c:1912: 警告：dereferencing pointer ‘tsdn’ does break strict-aliasing rules
src/jemalloc.c:1913: 警告：dereferencing pointer ‘tsdn’ does break strict-aliasing rules
src/jemalloc.c:1913: 警告：dereferencing pointer ‘tsdn’ does break strict-aliasing rules
src/jemalloc.c:1912: 警告：dereferencing pointer ‘tsdn’ does break strict-aliasing rules
src/jemalloc.c:1873: 附注：initialized from here
src/jemalloc.c:1504: 附注：initialized from here
src/jemalloc.c:1504: 附注：initialized from here
/usr/include/stdlib.h: 在函数‘calloc’中:
src/jemalloc.c:1541: 警告：dereferencing pointer ‘({anonymous})’ does break strict-aliasing rules
src/jemalloc.c:1504: 附注：initialized from here
src/jemalloc.c:1541: 警告：dereferencing pointer ‘tsdn’ does break strict-aliasing rules
src/jemalloc.c:1504: 附注：initialized from here
In file included from include/jemalloc/internal/jemalloc_internal_decls.h:32,
from include/jemalloc/internal/jemalloc_internal.h:5,
from src/jemalloc.c:2:
/usr/include/stdlib.h: 在函数‘realloc’中:
src/jemalloc.c:1912: 警告：dereferencing pointer ‘tsdn’ does break strict-aliasing rules
src/jemalloc.c:1913: 警告：dereferencing pointer ‘tsdn’ does break strict-aliasing rules
src/jemalloc.c:1913: 警告：dereferencing pointer ‘tsdn’ does break strict-aliasing rules
src/jemalloc.c:1912: 警告：dereferencing pointer ‘tsdn’ does break strict-aliasing rules
src/jemalloc.c:1873: 附注：initialized from here
src/jemalloc.c:1504: 附注：initialized from here
src/jemalloc.c:1504: 附注：initialized from here
/usr/include/stdlib.h: 在函数‘malloc’中:
src/jemalloc.c:1541: 警告：dereferencing pointer ‘({anonymous})’ does break strict-aliasing rules
src/jemalloc.c:1504: 附注：initialized from here
src/jemalloc.c:1541: 警告：dereferencing pointer ‘tsdn’ does break strict-aliasing rules
src/jemalloc.c:1504: 附注：initialized from here
/usr/include/stdlib.h: 在函数‘calloc’中:
src/jemalloc.c:1541: 警告：dereferencing pointer ‘({anonymous})’ does break strict-aliasing rules
src/jemalloc.c:1504: 附注：initialized from here
src/jemalloc.c: 在函数‘mallocx’中:
src/jemalloc.c:1541: 警告：dereferencing pointer ‘({anonymous})’ does break strict-aliasing rules

Big god, i am a novice, this hint, is there an impact?

Start with src/jemalloc.c at lines 1504, 1541, 1873, and 1912-1913, then reproduce the compiler warnings on CentOS 6.8. Determine whether the strict-aliasing warnings indicate incorrect behavior or only a compiler diagnostic, and document or address the confirmed impact.