Commit 626381706712eb593bcf0c843dd2275d71cf41da | zig

author	Loïc Grégoire <loic@gregoire.dev> 2026-10-11 17:50:49-04:00
committer	Matthew Lugg <mlugg@mlugg.co.uk> 2026-10-16 12:41:30+01:00
log	626381706712eb593bcf0c843dd2275d71cf41da
tree	f01ced8ce7b6e1e255c2ae5ba14f6c105380b154
parent	ad039bd70c55b85122343ac41cfd104b32e2d211
signature	Commit is signed but in an unrecognized format.

This was crashing on SPARC because it would do unaligned reads on the
TLS section. Now align the memsz properly.

1 files changed, 6 insertions(+), 1 deletions(-)

src/link/Elf2.zig+6-1

 @@ -11906,7 +11906,12 @@ fn flushResized(elf: *Elf, ni: MappedFile.Node.Index) std.mem.Allocator.Error!vo
                         const tls_vaddr = elf.targetLoad(&ph.vaddr);
                         const tls_offset = elf.targetLoad(&ph.offset);
-                        elf.targetStore(&ph.memsz, @intCast(tls_filesz + tbss_size));
+                        const tls_memsz = std.mem.alignForward(
+                            u64,
+                            tls_filesz + tbss_size,
+                            elf.targetLoad(&ph.@"align"),
+                        );
+                        elf.targetStore(&ph.memsz, @intCast(tls_memsz));
                         elf.updateNobitsAddress(
                             elf.shndx.tbss,