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lejp: dont underflow with anonymous braces

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This commit is contained in:
Andy Green 2017-11-26 18:34:24 +08:00
parent a76e9aad11
commit 2b30c82b9e
1 changed files with 8 additions and 5 deletions
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13
lib/misc/lejp.c
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@ -199,7 +199,6 @@ lejp_parse(struct lejp_ctx *ctx, const unsigned char *json, int len)
while (len--) {
c = *json++;
s = ctx->st[ctx->sp].s;
/* skip whitespace unless we should care */
@ -615,8 +614,10 @@ lejp_parse(struct lejp_ctx *ctx, const unsigned char *json, int len)
goto reject;
}
/* drop the path [n] bit */
ctx->ppos = ctx->st[ctx->sp - 1].p;
ctx->ipos = ctx->st[ctx->sp - 1].i;
if (ctx->sp) {
ctx->ppos = ctx->st[ctx->sp - 1].p;
ctx->ipos = ctx->st[ctx->sp - 1].i;
}
ctx->path[ctx->ppos] = '\0';
if (ctx->path_match &&
ctx->ppos <= ctx->path_match_len)
@ -642,8 +643,10 @@ lejp_parse(struct lejp_ctx *ctx, const unsigned char *json, int len)
}
/* pop */
ctx->sp--;
ctx->ppos = ctx->st[ctx->sp - 1].p;
ctx->ipos = ctx->st[ctx->sp - 1].i;
if (ctx->sp) {
ctx->ppos = ctx->st[ctx->sp - 1].p;
ctx->ipos = ctx->st[ctx->sp - 1].i;
}
ctx->path[ctx->ppos] = '\0';
if (ctx->path_match &&
ctx->ppos <= ctx->path_match_len)