https://sourceware.org/bugzilla/show_bug.cgi?id=27805
--- Comment #3 from Jim Wilson <wilson at gcc dot gnu.org> ---
My first thought was linkonce/comdat, but that is used by C++ and would have
shown up before. So that leaves -gc-sections. I can reproduce with a simple
example.
rohan:2010$ cat tmp.c
extern int sub1 (int);
extern int sub2 (int);
extern int sub3 (int);
extern int sub4 (int);
int main (void) { return sub2 (sub4 (0)); }
rohan:2011$ cat tmp2.c
int sub1 (int i) {return i + 10; }
int sub2 (int i) {return i + 20; }
int sub3 (int i) {return i - 10; }
int sub4 (int i) {return i - 20; }
rohan:2012$ riscv32-unknown-elf-gcc -O2 tmp.c tmp2.c -ffunction-sections
-Wl,-gc-sections -g
rohan:2013$ readelf -wr a.out
Contents of the .debug_aranges section:
Length: 28
Version: 2
Offset into .debug_info: 0x0
Pointer Size: 4
Segment Size: 0
Address Length
00010074 0000000e
00000000 00000000
Length: 52
Version: 2
Offset into .debug_info: 0x7c
Pointer Size: 4
Segment Size: 0
Address Length
00000000 00000000
00010114 00000004
00000000 00000000
00010118 00000004
00000000 00000000
rohan:2014$
I get the same result with an x86_64-linux compiler. And I get the same result
with -gdwarf-5.
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