https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99606
Bug ID: 99606
Summary: [10/11 Regression] ld.bfd: DWARF error: could not find
abbrev number 64 since r10-7521-g54af95767e887d63
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: rguenth at gcc dot gnu.org
Target Milestone: ---
I noticed that for a package that used to link successfully:
$ cat foma.i
char main_prompt[1];
int sprintf(char *, char *, ...);
void stack_size();
void main() { sprintf(main_prompt, "", stack_size); }
$ gcc -gdwarf-5 -Werror -O2 foma.i -flto=auto -g -c && gcc -fPIC foma.o
-flto=16 -fuse-ld=bfd -gdwarf-5
/usr/bin/ld.bfd: /usr/bin/ld.bfd: DWARF error: could not find abbrev number 64
/tmp/ccmeHh1F.ltrans0.ltrans.o: in function `main':
<artificial>:(.text.startup+0x3): undefined reference to `stack_size'
collect2: error: ld returned 1 exit status
A similar test-case triggers error for ld.gold:
$ cat foma.i
int printf(char *, ...);
int sprintf(char *, char *, ...);
void stack_size();
char main_prompt[1];
void main() {
sprintf(main_prompt, "", stack_size);
printf("\n");
}
$ gcc -gdwarf-5 -Werror -O2 foma.i -flto=auto -g -c && gcc -fPIC foma.o
-flto=16 -fuse-ld=gold -gdwarf-5
/usr/bin/ld.gold: internal error in format_file_lineno, at
../../gold/dwarf_reader.cc:2278
collect2: error: ld returned 1 exit status
$ gcc -gdwarf-5 -Werror -O2 foma.i -flto=auto -g -c && gcc -fPIC foma.o
-flto=16 -fuse-ld=bfd -gdwarf-5
/usr/bin/ld.bfd: /usr/bin/ld.bfd: DWARF error: could not find abbrev number 64
/tmp/ccylqmOx.ltrans0.ltrans.o: in function `main':
<artificial>:(.text.startup+0x7): undefined reference to `stack_size'
collect2: error: ld returned 1 exit status
