diff options
Diffstat (limited to 'ext')
| -rw-r--r-- | ext/XS-APItest/APItest.xs | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/ext/XS-APItest/APItest.xs b/ext/XS-APItest/APItest.xs index 4a0aac0c8a..d06e7810f8 100644 --- a/ext/XS-APItest/APItest.xs +++ b/ext/XS-APItest/APItest.xs @@ -2566,19 +2566,27 @@ test_EXTEND(max_offset, nsv, use_ss) SV *nsv; bool use_ss; PREINIT: - SV **sp = PL_stack_max + max_offset; + SV **new_sp = PL_stack_max + max_offset; + SSize_t new_offset = new_sp - PL_stack_base; PPCODE: if (use_ss) { SSize_t n = (SSize_t)SvIV(nsv); - EXTEND(sp, n); - *(sp + n) = NULL; + EXTEND(new_sp, n); + new_sp = PL_stack_base + new_offset; + assert(new_sp + n <= PL_stack_max); + if ((new_sp + n) > PL_stack_sp) + *(new_sp + n) = NULL; } else { IV n = SvIV(nsv); - EXTEND(sp, n); - *(sp + n) = NULL; + EXTEND(new_sp, n); + new_sp = PL_stack_base + new_offset; + assert(new_sp + n <= PL_stack_max); + if ((new_sp + n) > PL_stack_sp) + *(new_sp + n) = NULL; } - *PL_stack_max = NULL; + if (PL_stack_max > PL_stack_sp) + *PL_stack_max = NULL; void |