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Code Issues 1 Releases Wiki Activity

Address #336 case 6

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This commit is contained in:
Calvin Rose 2020-04-05 21:39:39 -05:00
parent cc70388846
commit a3c55681b2
2 changed files with 29 additions and 18 deletions
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34
src/core/marsh.c
View File

@ -916,7 +916,7 @@ static const uint8_t *unmarshal_one_fiber(
JanetFiber **out,
int flags) {
/* Initialize a new fiber */
/* Initialize a new fiber with gc friendly defaults */
JanetFiber *fiber = janet_gcalloc(JANET_MEMORY_FIBER, sizeof(JanetFiber));
fiber->flags = 0;
fiber->frame = 0;
@ -937,16 +937,16 @@ static const uint8_t *unmarshal_one_fiber(
int32_t stacktop = 0;
/* Read ints */
fiber->flags = readint(st, &data);
int32_t fiber_flags = readint(st, &data);
frame = readnat(st, &data);
fiber->stackstart = readnat(st, &data);
fiber->stacktop = readnat(st, &data);
fiber->maxstack = readnat(st, &data);
int32_t fiber_stackstart = readnat(st, &data);
int32_t fiber_stacktop = readnat(st, &data);
int32_t fiber_maxstack = readnat(st, &data);
/* Check for bad flags and ints */
if ((int32_t)(frame + JANET_FRAME_SIZE) > fiber->stackstart ||
fiber->stackstart > fiber->stacktop ||
fiber->stacktop > fiber->maxstack) {
if ((int32_t)(frame + JANET_FRAME_SIZE) > fiber_stackstart ||
fiber_stackstart > fiber_stacktop ||
fiber_stacktop > fiber_maxstack) {
janet_panic("fiber has incorrect stack setup");
}
@ -959,7 +959,7 @@ static const uint8_t *unmarshal_one_fiber(
/* get frames */
stack = frame;
stacktop = fiber->stackstart - JANET_FRAME_SIZE;
stacktop = fiber_stackstart - JANET_FRAME_SIZE;
while (stack > 0) {
JanetFunction *func = NULL;
JanetFuncDef *def = NULL;
@ -1028,25 +1028,31 @@ static const uint8_t *unmarshal_one_fiber(
}
/* Check for fiber env */
if (fiber->flags & JANET_FIBER_FLAG_HASENV) {
if (fiber_flags & JANET_FIBER_FLAG_HASENV) {
Janet envv;
fiber->flags &= ~JANET_FIBER_FLAG_HASENV;
fiber_flags &= ~JANET_FIBER_FLAG_HASENV;
data = unmarshal_one(st, data, &envv, flags + 1);
janet_asserttype(envv, JANET_TABLE);
fiber->env = janet_unwrap_table(envv);
}
/* Check for child fiber */
if (fiber->flags & JANET_FIBER_FLAG_HASCHILD) {
if (fiber_flags & JANET_FIBER_FLAG_HASCHILD) {
Janet fiberv;
fiber->flags &= ~JANET_FIBER_FLAG_HASCHILD;
fiber_flags &= ~JANET_FIBER_FLAG_HASCHILD;
data = unmarshal_one(st, data, &fiberv, flags + 1);
janet_asserttype(fiberv, JANET_FIBER);
fiber->child = janet_unwrap_fiber(fiberv);
}
/* Return data */
/* We have valid fiber, finally construct remaining fields. */
fiber->frame = frame;
fiber->flags = fiber_flags;
fiber->stackstart = fiber_stackstart;
fiber->stacktop = fiber_stacktop;
fiber->maxstack = fiber_maxstack;
/* Return data */
*out = fiber;
return data;
}

13
test/suite8.janet
View File

@ -216,10 +216,15 @@
(assert-error "unmarshal errors 4"
(unmarshal
@"\xD7\xCD\0e/p\x98\0\0\x03\x01\x01\x01\x02\0\0\x04\0\xCEe/p../tools
\0\0\0/afl\0\0\x01\0erate\xDE\xDE\xDE\xDE\xDE\xDE\xDE\xDE\xDE\xDE
\xA8\xDE\xDE\xDE\xDE\xDE\xDE\0\0\0\xDE\xDE_unmarshal_testcase3.ja
neldb\0\0\0\xD8\x05printG\x01\0\xDE\xDE\xDE'\x03\0marshal_tes/\x02
\0\0\0\0\0*\xFE\x01\04\x02\0\0'\x03\0\r\0\r\0\r\0\r" load-image-dict))
\0\0\0/afl\0\0\x01\0erate\xDE\xDE\xDE\xDE\xDE\xDE\xDE\xDE\xDE\xDE
\xA8\xDE\xDE\xDE\xDE\xDE\xDE\0\0\0\xDE\xDE_unmarshal_testcase3.ja
neldb\0\0\0\xD8\x05printG\x01\0\xDE\xDE\xDE'\x03\0marshal_tes/\x02
\0\0\0\0\0*\xFE\x01\04\x02\0\0'\x03\0\r\0\r\0\r\0\r" load-image-dict))
# No segfault, valgrind clean.
(def x @"\xCC\xCD.nd\x80\0\r\x1C\xCDg!\0\x07\xCC\xCD\r\x1Ce\x10\0\r;\xCDb\x04\xFF9\xFF\x80\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04uu\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\0\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04}\x04\x04\x04\x04\x04\x04\x04\x04#\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\0\x01\0\0\x03\x04\x04\x04\xE2\x03\x04\x04\x04\x04\x04\x04\x04\x04\x04\x14\x1A\x04\x04\x04\x04\x04\x18\x04\x04!\x04\xE2\x03\x04\x04\x04\x04\x04\x04$\x04\x04\x04\x04\x04\x04\x04\x04\x04\x80\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04\x04A\0\0\0\x03\0\0!\xBF\xFF")
(unmarshal x load-image-dict)
(gccollect)
(marshal x make-image-dict)
(end-suite)