https://gcc.gnu.org/g:0bdbd1fa4871d8895a1056b63a8710e6dbfaccbd
commit r16-7688-g0bdbd1fa4871d8895a1056b63a8710e6dbfaccbd Author: Iain Sandoe <[email protected]> Date: Tue Feb 24 11:44:27 2026 +0000 libiberty, Darwin: Fix handling of file offsets. In the case where a Mach-O object is embedded inside some container (e.g. an archive) we must account the offset from the start of that container when reading. In most cases, this has been done correctly. However, we were missing the case for reading segment data. This only showed up once we tried using archives (since regular Mach-O objects start at the begining of the file). Fixed thus. libiberty/ChangeLog: * simple-object-mach-o.c (simple_object_mach_o_segment): Account for the offset of this Mach-O object from the start of any container. Signed-off-by: Iain Sandoe <[email protected]> Diff: --- libiberty/simple-object-mach-o.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libiberty/simple-object-mach-o.c b/libiberty/simple-object-mach-o.c index 3e81d6f908a0..0897a3edf7d5 100644 --- a/libiberty/simple-object-mach-o.c +++ b/libiberty/simple-object-mach-o.c @@ -464,7 +464,8 @@ simple_object_mach_o_segment (simple_object_read *sobj, off_t offset, /* Fetch the section headers from the segment command. */ secdata = XNEWVEC (unsigned char, nsects * sechdrsize); - if (!simple_object_internal_read (sobj->descriptor, offset + seghdrsize, + if (!simple_object_internal_read (sobj->descriptor, + sobj->offset + offset + seghdrsize, secdata, nsects * sechdrsize, errmsg, err)) { XDELETEVEC (secdata);
