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authorYegappan Lakshmanan <yegappan@yahoo.com>2023-09-27 18:51:43 +0200
committerChristian Brabandt <cb@256bit.org>2023-09-27 18:53:10 +0200
commita76fbe6e00249d25fa2cfaf80ddaa360f0e1711d (patch)
tree98f066d8615b036a066e0f31c26e473d0a18121e /src/vim9instr.c
parent91adcbdcc1862b0ef7ece4df5bc642d70ca61e56 (diff)
patch 9.0.1944: Vim9: function instruction pointer invalidatedv9.0.1944
Problem: Vim9: function instruction pointer invalidated Solution: Use the funcref index instead of the instruction pointer closes: #13178 closes: #13196 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Diffstat (limited to 'src/vim9instr.c')
-rw-r--r--src/vim9instr.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/src/vim9instr.c b/src/vim9instr.c
index 96c02de7ca..48b4ea4046 100644
--- a/src/vim9instr.c
+++ b/src/vim9instr.c
@@ -1378,7 +1378,9 @@ generate_NEWDICT(cctx_T *cctx, int count, int use_null)
* Generate an ISN_FUNCREF instruction.
* For "obj.Method" "cl" is the class of the object (can be an interface or a
* base class) and "fi" the index of the method on that class.
- * "isnp" is set to the instruction, so that fr_dfunc_idx can be set later.
+ * "isn_idx" is set to the index of the instruction, so that fr_dfunc_idx can
+ * be set later. The index is used instead of a pointer to the instruction
+ * because the instruction memory can be reallocated.
*/
int
generate_FUNCREF(
@@ -1386,7 +1388,7 @@ generate_FUNCREF(
ufunc_T *ufunc,
class_T *cl,
int fi,
- isn_T **isnp)
+ int *isn_idx)
{
isn_T *isn;
type_T *type;
@@ -1397,8 +1399,9 @@ generate_FUNCREF(
RETURN_OK_IF_SKIP(cctx);
if ((isn = generate_instr(cctx, ISN_FUNCREF)) == NULL)
return FAIL;
- if (isnp != NULL)
- *isnp = isn;
+ if (isn_idx != NULL)
+ // save the index of the new instruction
+ *isn_idx = cctx->ctx_instr.ga_len - 1;
has_vars = get_loop_var_info(cctx, &loopinfo);
if (ufunc->uf_def_status == UF_NOT_COMPILED || has_vars || cl != NULL)
@@ -1419,7 +1422,7 @@ generate_FUNCREF(
extra->fre_func_name = vim_strsave(ufunc->uf_name);
if (ufunc->uf_def_status != UF_NOT_COMPILED && cl == NULL)
{
- if (isnp == NULL && ufunc->uf_def_status == UF_TO_BE_COMPILED)
+ if (isn_idx == NULL && ufunc->uf_def_status == UF_TO_BE_COMPILED)
// compile the function now, we need the uf_dfunc_idx value
(void)compile_def_function(ufunc, FALSE, CT_NONE, NULL);
isn->isn_arg.funcref.fr_dfunc_idx = ufunc->uf_dfunc_idx;