diff options
Diffstat (limited to 'gas/dwarf2dbg.c')
| -rw-r--r-- | gas/dwarf2dbg.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/gas/dwarf2dbg.c b/gas/dwarf2dbg.c index 4061c72893..85c1f30e89 100644 --- a/gas/dwarf2dbg.c +++ b/gas/dwarf2dbg.c @@ -1718,11 +1718,12 @@ dwarf2_init (void) /* Finish the dwarf2 debug sections. We emit .debug.line if there were any .file/.loc directives, or --gdwarf2 was given, or if the - file has a non-empty .debug_info section. If we emit .debug_line, - and the .debug_info section is empty, we also emit .debug_info, - .debug_aranges and .debug_abbrev. ALL_SEGS will be non-null if - there were any .file/.loc directives, or --gdwarf2 was given and - there were any located instructions emitted. */ + file has a non-empty .debug_info section and an empty .debug_line + section. If we emit .debug_line, and the .debug_info section is + empty, we also emit .debug_info, .debug_aranges and .debug_abbrev. + ALL_SEGS will be non-null if there were any .file/.loc directives, + or --gdwarf2 was given and there were any located instructions + emitted. */ void dwarf2_finish (void) @@ -1731,13 +1732,24 @@ dwarf2_finish (void) struct line_seg *s; segT info_seg; int emit_other_sections = 0; + int empty_debug_line = 0; info_seg = bfd_get_section_by_name (stdoutput, ".debug_info"); emit_other_sections = info_seg == NULL || !seg_not_empty_p (info_seg); - if (!all_segs && emit_other_sections) - /* There is no line information and no non-empty .debug_info - section. */ + line_seg = bfd_get_section_by_name (stdoutput, ".debug_line"); + empty_debug_line = line_seg == NULL || !seg_not_empty_p (line_seg); + + /* We can't construct a new debug_line section if we already have one. + Give an error. */ + if (all_segs && !empty_debug_line) + as_fatal ("duplicate .debug_line sections"); + + if ((!all_segs && emit_other_sections) + || (!emit_other_sections && !empty_debug_line)) + /* If there is no line information and no non-empty .debug_info + section, or if there is both a non-empty .debug_info and a non-empty + .debug_line, then we do nothing. */ return; /* Calculate the size of an address for the target machine. */ |