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[Qemu-devel] [PATCH 44/56] json: Fix latent parser aborts at end of inpu
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PATCH 44/56] json: Fix latent parser aborts at end of input |
Date: |
Wed, 8 Aug 2018 14:03:22 +0200 |
json-parser.c carefully reports end of input like this:
token = parser_context_pop_token(ctxt);
if (token == NULL) {
parse_error(ctxt, NULL, "premature EOI");
goto out;
}
Except parser_context_pop_token() can't return null, it fails its
assertion instead. Same for parser_context_peek_token(). Broken in
commit 65c0f1e9558, and faithfully preserved in commit 95385fe9ace.
Only a latent bug, because the streamer throws away any input that
could trigger it.
Drop the assertions, so we can fix the streamer in the next commit.
Signed-off-by: Markus Armbruster <address@hidden>
---
qobject/json-parser.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/qobject/json-parser.c b/qobject/json-parser.c
index 350a9d267b..c2974d46b3 100644
--- a/qobject/json-parser.c
+++ b/qobject/json-parser.c
@@ -221,14 +221,12 @@ out:
static JSONToken *parser_context_pop_token(JSONParserContext *ctxt)
{
g_free(ctxt->current);
- assert(!g_queue_is_empty(ctxt->buf));
ctxt->current = g_queue_pop_head(ctxt->buf);
return ctxt->current;
}
static JSONToken *parser_context_peek_token(JSONParserContext *ctxt)
{
- assert(!g_queue_is_empty(ctxt->buf));
return g_queue_peek_head(ctxt->buf);
}
--
2.17.1
[Qemu-devel] [PATCH 28/56] json: Fix \uXXXX for surrogate pairs, Markus Armbruster, 2018/08/08
[Qemu-devel] [PATCH 44/56] json: Fix latent parser aborts at end of input,
Markus Armbruster <=
[Qemu-devel] [PATCH 20/56] check-qjson: Document we expect invalid UTF-8 to be rejected, Markus Armbruster, 2018/08/08
[Qemu-devel] [PATCH 52/56] json: Eliminate lexer state IN_WHITESPACE, pseudo-token JSON_SKIP, Markus Armbruster, 2018/08/08
[Qemu-devel] [PATCH 48/56] json: Enforce token count and size limits more tightly, Markus Armbruster, 2018/08/08
[Qemu-devel] [PATCH 11/56] check-qjson: Cover UTF-8 in single quoted strings, Markus Armbruster, 2018/08/08