https://sourceware.org/bugzilla/show_bug.cgi?id=26583
--- Comment #3 from Kilian Kegel <minnowware at hotmail dot com> --- Hi H.J.Lu, thanks a lot. in ldBugDemo0 the bug appears, because "char var" is kept unintilialized. in ldBugDemo1 the bug does not appear , because "char var" is intilialized. in ldBugDemo2 the bug does not appear , because "char var" is intilialized. If you check the screen shot from the diff tool: https://github.com/KilianKegel/GNU-ld-for-MicrosoftCOFF-to-LinuxELF/blob/master/bssbug.png you can see, that on the left side var has the faulty address 403013 in getaddr1() line 8 but the correct address 403014 in getaddr2() line 14. THIS IS THE .BSS bug! The work around is to initialize var to 0. In that case the linker doesn't create a "common symbol". Instead the compiler creates an initialized var placed in .BSS that is not "common". In ldBugDemo2 var is uninitialized too, but is placed in a separate file. In that case the .BSS bug doesn't occure despite var is a "common symbol" in .BSS. https://github.com/KilianKegel/GNU-ld-for-MicrosoftCOFF-to-LinuxELF/blob/master/bssbugMAP.png Regards, Kilian -- You are receiving this mail because: You are on the CC list for the bug.
