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gcc -O3 -c test.c -o test1.o nm test1.o shows: ------------------------ 00000000 b .bss 00000000 d .data 00000000 i .drectve 00000000 r .eh_frame 00000000 r .rdata 00000000 t .text 00000000 t .text.startup U ___main U _exp 00000000 D _in 00000000 T _main 00000080 C _out U _printf ------------------------
gcc -O3 -ffast-math -c test.c -o test2.o nm test.2.o shows: ------------------------ 00000000 b .bss 00000000 d .data 00000000 i .drectve 00000000 r .eh_frame 00000000 r .rdata 00000000 t .text 00000000 t .text.startup U ___main 00000000 D _in 00000000 T _main 00000080 C _out U _printf ------------------------
-- Best Regards, xunxun
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