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Fix #1444 - clang warns on undefined behavior with null pointers

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This commit is contained in:
Sergey Lyubka 2022-01-14 09:55:15 +00:00
parent 9fd80fd136
commit c53e2fcc14
3 changed files with 8 additions and 6 deletions
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7
mongoose.c
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@ -1683,7 +1683,7 @@ void mg_http_delete_chunk(struct mg_connection *c, struct mg_http_message *hm) {
static void http_cb(struct mg_connection *c, int ev, void *evd, void *fnd) {
if (ev == MG_EV_READ || ev == MG_EV_CLOSE) {
struct mg_http_message hm;
for (;;) {
while (c->recv.buf != NULL && c->recv.len > 0) {
int n = mg_http_parse((char *) c->recv.buf, c->recv.len, &hm);
bool is_chunked = n > 0 && mg_is_chunked(&hm);
if (ev == MG_EV_CLOSE) {
@ -4291,8 +4291,9 @@ static size_t mg_nce(const char *s, size_t n, size_t ofs, size_t *koff,
}
bool mg_commalist(struct mg_str *s, struct mg_str *k, struct mg_str *v) {
size_t koff = 0, klen = 0, voff = 0, vlen = 0;
size_t off = mg_nce(s->ptr, s->len, 0, &koff, &klen, &voff, &vlen);
size_t koff = 0, klen = 0, voff = 0, vlen = 0, off = 0;
if (s->ptr == NULL || s->len == 0) return 0;
off = mg_nce(s->ptr, s->len, 0, &koff, &klen, &voff, &vlen);
if (k != NULL) *k = mg_str_n(s->ptr + koff, klen);
if (v != NULL) *v = mg_str_n(s->ptr + voff, vlen);
*s = mg_str_n(s->ptr + off, s->len - off);

2
src/http.c
View File

@ -919,7 +919,7 @@ void mg_http_delete_chunk(struct mg_connection *c, struct mg_http_message *hm) {
static void http_cb(struct mg_connection *c, int ev, void *evd, void *fnd) {
if (ev == MG_EV_READ || ev == MG_EV_CLOSE) {
struct mg_http_message hm;
for (;;) {
while (c->recv.buf != NULL && c->recv.len > 0) {
int n = mg_http_parse((char *) c->recv.buf, c->recv.len, &hm);
bool is_chunked = n > 0 && mg_is_chunked(&hm);
if (ev == MG_EV_CLOSE) {

5
src/util.c
View File

@ -113,8 +113,9 @@ static size_t mg_nce(const char *s, size_t n, size_t ofs, size_t *koff,
}
bool mg_commalist(struct mg_str *s, struct mg_str *k, struct mg_str *v) {
size_t koff = 0, klen = 0, voff = 0, vlen = 0;
size_t off = mg_nce(s->ptr, s->len, 0, &koff, &klen, &voff, &vlen);
size_t koff = 0, klen = 0, voff = 0, vlen = 0, off = 0;
if (s->ptr == NULL || s->len == 0) return 0;
off = mg_nce(s->ptr, s->len, 0, &koff, &klen, &voff, &vlen);
if (k != NULL) *k = mg_str_n(s->ptr + koff, klen);
if (v != NULL) *v = mg_str_n(s->ptr + voff, vlen);
*s = mg_str_n(s->ptr + off, s->len - off);