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ffi/unsafe: fix memory-management problem in recent change

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Fixes a problem with bba223a9fe.
This commit is contained in:
Matthew Flatt 2013-04-23 18:55:24 -06:00
parent c6e2843557
commit dc19b8f4e2
2 changed files with 8 additions and 8 deletions
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8
src/foreign/foreign.c
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@ -3720,7 +3720,7 @@ void free_cl_cif_queue_args(void *ignored, void *p)
void *data = ((closure_and_cif*)p)->data, *constant_result;
void **q = (void **)data;
data = q[0];
constant_result = q[3];
constant_result = q[2];
free(q);
if (constant_result) free(constant_result);
#ifdef MZ_PRECISE_GC
@ -3781,8 +3781,8 @@ static Scheme_Object *foreign_ffi_callback(int argc, Scheme_Object *argv[])
GC_CAN_IGNORE void *callback_data;
# ifdef MZ_USE_MZRT
int keep_queue = 0;
void *constant_reply;
int constant_reply_size;
void *constant_reply = NULL;
int constant_reply_size = 0;
# endif /* MZ_USE_MZRT */
if (!SCHEME_PROCP(argv[0]))
@ -3873,7 +3873,7 @@ static Scheme_Object *foreign_ffi_callback(int argc, Scheme_Object *argv[])
if (keep_queue) {
/* For ffi_queue_callback(), add a level of indirection in `data' to
hold the place-specific `ffi_sync_queue'. Use
`free_cl_cif_data_args' to clean up this extra level. */
`free_cl_cif_queue_args' to clean up this extra level. */
GC_CAN_IGNORE void **tmp, *cr;
if (constant_reply) {
cr = malloc(constant_reply_size);

8
src/foreign/foreign.rktc
View File

@ -2926,7 +2926,7 @@ void free_cl_cif_queue_args(void *ignored, void *p)
void *data = ((closure_and_cif*)p)->data, *constant_result;
void **q = (void **)data;
data = q[0];
constant_result = q[3];
constant_result = q[2];
free(q);
if (constant_result) free(constant_result);
#ifdef MZ_PRECISE_GC
@ -2985,8 +2985,8 @@ void free_cl_cif_queue_args(void *ignored, void *p)
GC_CAN_IGNORE void *callback_data;
@@IFDEF{MZ_USE_MZRT}{
int keep_queue = 0;
void *constant_reply;
int constant_reply_size;
void *constant_reply = NULL;
int constant_reply_size = 0;
}
if (!SCHEME_PROCP(argv[0]))
@ -3073,7 +3073,7 @@ void free_cl_cif_queue_args(void *ignored, void *p)
if (keep_queue) {
/* For ffi_queue_callback(), add a level of indirection in `data' to
hold the place-specific `ffi_sync_queue'. Use
`free_cl_cif_data_args' to clean up this extra level. */
`free_cl_cif_queue_args' to clean up this extra level. */
GC_CAN_IGNORE void **tmp, *cr;
if (constant_reply) {
cr = malloc(constant_reply_size);