https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100446
Simon Marchi <simon.marchi at polymtl dot ca> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |simon.marchi at polymtl dot ca
--- Comment #7 from Simon Marchi <simon.marchi at polymtl dot ca> ---
Indeed, as soon as I build something with more than two CUs (no LTO involved),
I get these import 0x0:
$ gcc --version
gcc (GCC) 10.2.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ cat test.c
#include <unistd.h>
void foo();
int main() {
foo();
}
$ cat test2.c
#include <unistd.h>
void foo()
{
}
$ gcc test.c test2.c -g3 -O0 -o test
$ readelf --debug-dump=macro test | less
...
Offset: 0x1a81
Version: 4
Offset size: 4
Offset into .debug_line: 0x1c1
DW_MACRO_import - offset : 0x0
DW_MACRO_start_file - lineno: 0 filenum: 1 filename: test2.c
DW_MACRO_start_file - lineno: 31 filenum: 2 filename:
/usr/include/stdc-predef.h
DW_MACRO_import - offset : 0x0
DW_MACRO_end_file
DW_MACRO_start_file - lineno: 1 filenum: 3 filename: /usr/include/unistd.h
DW_MACRO_define_strp - lineno : 23 macro : _UNISTD_H 1
DW_MACRO_start_file - lineno: 25 filenum: 4 filename: /usr/include/features.h
DW_MACRO_import - offset : 0x0
DW_MACRO_start_file - lineno: 473 filenum: 5 filename:
/usr/include/sys/cdefs.h
DW_MACRO_import - offset : 0x0
DW_MACRO_start_file - lineno: 462 filenum: 6 filename:
/usr/include/bits/wordsize.h
DW_MACRO_import - offset : 0x0
DW_MACRO_end_file
DW_MACRO_start_file - lineno: 463 filenum: 7 filename:
/usr/include/bits/long-double.h
DW_MACRO_define_strp - lineno : 21 macro : __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI
0
DW_MACRO_end_file
DW_MACRO_import - offset : 0x0
DW_MACRO_end_file
DW_MACRO_start_file - lineno: 497 filenum: 8 filename:
/usr/include/gnu/stubs.h
...
