https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101470
Bug ID: 101470
Summary: Support -gline-tables-only
Product: gcc
Version: 11.1.1
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
Target Milestone: ---
In a gdb discussion here (
https://sourceware.org/bugzilla/show_bug.cgi?id=28094 ) (starting from the fact
that the dwarf 5 standard mentions that there's a "common practice of stripping
all but the line number sections") it was observed that there's:
- a gold option -Wl,--strip-debug-non-line (not working with gdwarf-5, see
https://sourceware.org/bugzilla/show_bug.cgi?id=28095)
- a 2018 patch proposing to add -Wl,--strip-debug-non-line to ldd
- clang -gline-tables-only
but that there's no gcc equivalent.
After realizing that clangs -gline-tables-only is an alias for -g1, I looked at
gcc's -g1 and found it does have line table info (since gcc 4.9), but emits a
bit more than clangs -g1.
I compared output for a hello world and found that gcc:
- emits a DIE for main, while clang does not
- emits a .debug_aranges section, while clang does not
