Hi,
Detected by the elfutils dwarflint tool.
Example:
$ echo > empty.c
$ gcc -g -c empty.c
$ readelf -x .debug_abbrev empty.o
Hex dump of section '.debug_abbrev':
0x00000000 00 .
Although harmless it might add up if a project has a lot of objects without any
real debuginfo in them. There might not actually be many such projects though.
2011-03-24 Mark Wielaard <m...@redhat.com>
PR debug/48041
* dwarf2out.c (output_abbrev_section): Only terminate table when
abbrev_die_table_in_use > 1.
Bootstraps fine on x86_64-gnu-linux and no regressions seen with make check -k
OK, to commit?
Thanks,
Mark
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -11084,7 +11084,8 @@ output_abbrev_section (void)
}
/* Terminate the table. */
- dw2_asm_output_data (1, 0, NULL);
+ if (abbrev_die_table_in_use > 1)
+ dw2_asm_output_data (1, 0, NULL);
}
/* Output a symbol we can use to refer to this DIE from another CU. */
