pathological_strings.c

#include <string.h>
#include "libxml/tree.h"

int main(){
    char buf[4000000];
    const char *line = "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz&#xD;\n";
    const char *xml = "<foo></foo>";
    int i;

    // 4MB of 80-byte lines with an entity at the end.
    for (i = 0; i < 50000; i++) {
        memcpy(&buf[i * 80], line, 80);
    }
    buf[4000000] = '\0';

    xmlDocPtr doc = xmlReadMemory(xml, strlen(xml), NULL, NULL, 0);

    xmlNodeSetContent(doc->children, buf);

    xmlFreeDoc(doc);
}