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Code Issues 1 Releases Wiki Activity

Make JANET_FRAME_SIZE consistent across architectures.

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This means unmarshalling fibers should work across arches.
This commit is contained in:
Calvin Rose 2020-04-06 12:41:56 -05:00
parent 72beeeeaaa
commit b75a22b753
3 changed files with 7 additions and 7 deletions
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2
src/core/marsh.c
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@ -987,7 +987,7 @@ static const uint8_t *unmarshal_one_fiber(
if (expected_framesize != stacktop - stack) {
janet_panic("fiber stackframe size mismatch");
}
if (pcdiff < 0 || pcdiff >= def->bytecode_length) {
if (pcdiff >= def->bytecode_length) {
janet_panic("fiber stackframe has invalid pc");
}
if ((int32_t)(prevframe + JANET_FRAME_SIZE) > stack) {

5
src/include/janet.h
View File

@ -733,8 +733,9 @@ struct JanetStackFrame {
int32_t flags;
};
/* Number of Janets a frame takes up in the stack */
#define JANET_FRAME_SIZE ((sizeof(JanetStackFrame) + sizeof(Janet) - 1) / sizeof(Janet))
/* Number of Janets a frame takes up in the stack
* Should be constant across architectures */
#define JANET_FRAME_SIZE 4
/* A dynamic array type. */
struct JanetArray {

3
test/suite8.janet
View File

@ -232,10 +232,9 @@ neldb\0\0\0\xD8\x05printG\x01\0\xDE\xDE\xDE'\x03\0marshal_tes/\x02
(unmarshal b load-image-dict)
(gccollect)
(def v
(unmarshal
@"\xD7\xCD0\xD4000000\0\x03\x01\xCE\00\0\x01\0\0000\x03\0\0\0000000000\xCC0\0000"
load-image-dict))
load-image-dict)
(gccollect)
(end-suite)