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I am trying to understand the implications of .rdata section vs .text section. I am trying a simple program as below int main() { const int a = 10; printf("%d\n", a); return 0; } When I build and dump the map file through gcc -o a.out sample.c -Wl,Map,test.map and search for sample.o , I find the following allocations .text 0x0040138c 0x34 sample.o .data 0x00402000 0x0 sample.o .rdata 0x00403064 0x8 sample.o .eh_frame 0x00404060 0x38 sample.o .bss 0x00405020 0x0 sample.o Now, if I modify my program slightly to make a a global variable as const int a = 10; int main() { printf("%d\n", a); return 0; } By repeating the same step as above, I observe that the allocations are as below .text 0x0040138c 0x2c sample.o .data 0x00402000 0x0 sample.o .rdata 0x00403064 0xc sample.o .eh_frame 0x00404060 0x38 sample.o .bss 0x00405020 0x0 sample.o Wherein it clearly shows a is allocated into .rdata section as .rdata 0x00403064 0xc sample.o 0x00403064 a From these experiments, I understand the global const are alocated into .rdata section, whereas the .text section size has come down. Hence, I presume that a was allocated into .text section in the first example. My questions are: Is scope of a const variable considered while determining it's place in .rdata or .text ? From my experiment, I observe that the variable required 8 bytes when it was alloca

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