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--></style></head><body bgcolor=white lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt'>I am using clang 3.8.0 and gcc 6.2.1 on CentOS 7.3. Everything works fine until I add ‘-fsanitize=safe-stack’ to the compiler and linker flags.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>The shared libraries are built fine but executables linking with these libraries cannot be generated due to a unresolved symbol __safestack_unsaft_stack_ptr. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>Is this because that symbol is only available in Clang’s libc++ runtime library but not in gcc’s libstdc++?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.5pt;color:black'>Alex Chen</span><span style='font-size:11.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p></div></body></html>