[Bug default/33876] Assertion failed: (__abg_cond__), function maybe_adjust_address_for_exec_or_dyn

[emaste at freebsd dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=33876

emaste at freebsd dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |emaste at freebsd dot org

--- Comment #1 from emaste at freebsd dot org ---
What FreeBSD version are you running?

ELF Tool Chain's objcopy is used in FreeBSD 14.x and earlier and it seems this
is its behaviour:

$ cc -g hello.c
$ elftc-objcopy --only-keep-debug a.out a.out.debug
$ readelf -l a.out.debug

There are no program headers in this file.

...


FreeBSD 15.0 and later switch to LLVM's binutils-like tools. My system has the
tools from LLVM 21 installed but I imagine this hasn't changed since 19.x which
is in FreeBSD 15 and -current. LLVM's objcopy leaves the program headers in
place:

$ objcopy --version
llvm-objcopy, compatible with GNU objcopy
LLVM (http://llvm.org/):
  LLVM version 21.1.7
  Optimized build with assertions.
$ objcopy --only-keep-debug a.out a.out.debug
$ readelf -l a.out.debug
readelf: warning: 'a.out.debug': no valid dynamic table was found

Elf file type is EXEC (Executable file)
Entry point 0x400470
There are 8 program headers, starting at offset 64

Program Headers:
  Type           Offset   VirtAddr           PhysAddr           FileSiz  MemSiz
  Flg Align
  PHDR           0x000040 0x0000000000400040 0x0000000000400040 0x0001c0
0x0001c0 R   0x8
...

So this should not be an issue on FreeBSD 15 and later.

IMO though the parser should handle this -- debug data isn't loadable and so
program headers shouldn't be necessary. GDB and LLDB work just fine with
standalone debug data generated by ELF Tool Chain.

-- 
You are receiving this mail because:
You are on the CC list for the bug.