Fix a possible crash in the error handling.
@@ -378,6 +378,8 @@ void ERR_put_error(int lib, int func, int reason, const char *file, int line)
}
#endif
es = ERR_get_state();
+ if (es == NULL)
+ return;
es->top = (es->top + 1) % ERR_NUM_ERRORS;
if (es->top == es->bottom)
@@ -395,6 +397,8 @@ void ERR_clear_error(void)
ERR_STATE *es;
es = ERR_get_state();
+ if (es == NULL)
+ return;
for (i = 0; i < ERR_NUM_ERRORS; i++) {
err_clear(es, i);
@@ -459,6 +463,8 @@ static unsigned long get_error_values(int inc, int top, const char **file,
unsigned long ret;
es = ERR_get_state();
+ if (es == NULL)
+ return 0;
if (inc && top) {
if (file)
@@ -709,6 +715,8 @@ void ERR_set_error_data(char *data, int flags)
int i;
es = ERR_get_state();
+ if (es == NULL)
+ return;
i = es->top;
if (i == 0)
@@ -764,6 +772,8 @@ int ERR_set_mark(void)
ERR_STATE *es;
es = ERR_get_state();
+ if (es == NULL)
+ return 0;
if (es->bottom == es->top)
return 0;
@@ -776,6 +786,8 @@ int ERR_pop_to_mark(void)
ERR_STATE *es;
es = ERR_get_state();
+ if (es == NULL)
+ return 0;
while (es->bottom != es->top
&& (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
