fix vstack leak

I think this code only affects the ARM EABI target, and only when
returning small structures that might be unaligned. However, it was both
leaking vstack entries and failing to achieve what I think is its
purpose, to ensure the sret argument would be aligned properly. Both
issues fixed.

1 files changed, 2 insertions, 1 deletions

diff --git a/tccgen.c b/tccgen.c
index 8c1165f..e054b4b 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -4916,12 +4916,13 @@ static void block(int *bsym, int *csym, int *case_sym, int *def_sym,
                     size = type_size(&func_vt,&align);
                     if ((vtop->r != (VT_LOCAL | VT_LVAL) || (vtop->c.i & (ret_align-1)))
                         && (align & (ret_align-1))) {
-                        loc = (loc - size) & -align;
+                        loc = (loc - size) & -ret_align;
                         addr = loc;
                         type = func_vt;
                         vset(&type, VT_LOCAL | VT_LVAL, addr);
                         vswap();
                         vstore();
+                        vpop();
                         vset(&ret_type, VT_LOCAL | VT_LVAL, addr);
                     }
                     vtop->type = ret_type;