Hi all, I have a question about DWARF of GHC debugging.
Given simple C code, a command gcc -g example.c -o example outputs example with built DWARF.
#include <stdio.h>
int main()
{
int x = 42;
printf("The answer is %d\n", x);
return 0;
}
Now I run dwarfdump example shows useful DWARF values like follows:
< 2><0x0000034b> DW_TAG_variable
DW_AT_name x
DW_AT_decl_file 0x00000001 ~/example.c
DW_AT_decl_line 0x00000005
DW_AT_decl_column 0x00000009
DW_AT_type <0x00000063>
DW_AT_location len 0x0002: 916c: DW_OP_fbreg -20
The output description says a variable x is declared at line number 5.
When the similar haskell code comes to compile with -g flag (i.e., ghc -g Main.hs -o Main):
main :: IO ()
main = do
let x12345 = 1
x6789 = 2
putStrLn $ show (x12345 + x6789)
The output of dwarfdump does not show similar information as shown in the C example. I guess the representation seems different and I have no idea how to find the same information from.
Any comment on how can I find debugging symbols?
Thank you