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fix(vfs): skip size_t header in _sbf_FILEIO_write for bytes data #1

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fix(vfs): skip size_t header in _sbf_FILEIO_write for bytes data #1

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6 changes: 4 additions & 2 deletions port/solana_sbf/builtins_sbf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -562,7 +562,8 @@ void _sbf_FILEIO_write(PikaObj* self, Args* args) {
size_t len = strlen(str);
written = pika_platform_fwrite(str, 1, len, f);
} else if (type == ARG_TYPE_BYTES) {
uint8_t* bytes = arg_getBytes(aData);
/* arg_getBytes returns pointer to [size_t size][data] - skip the size_t prefix */
uint8_t* bytes = arg_getBytes(aData) + sizeof(size_t);
size_t len = arg_getBytesSize(aData);
written = pika_platform_fwrite(bytes, 1, len, f);
} else if (argType_isObject(type)) {
Expand All @@ -571,7 +572,8 @@ void _sbf_FILEIO_write(PikaObj* self, Args* args) {
if (obj != NULL) {
Arg* rawArg = obj_getArg(obj, "raw");
if (rawArg != NULL && arg_getType(rawArg) == ARG_TYPE_BYTES) {
uint8_t* bytes = arg_getBytes(rawArg);
/* arg_getBytes returns pointer to [size_t size][data] - skip the size_t prefix */
uint8_t* bytes = arg_getBytes(rawArg) + sizeof(size_t);
size_t len = arg_getBytesSize(rawArg);
written = pika_platform_fwrite(bytes, 1, len, f);
}
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