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[1999-12-04 18:58 UTC] sroberts at snap dot com
Both symptoms come from trivial test program :
<?php
$foo = file("http://www.snap.com/");
echo "<pre>" . htmlspecialchars($foo[0]) . "</pre>";
?>
Symptom 1 : For most URLs it reports
Warning: Invalid URL specified, http://www.snap.com/ in /home/simonr/public_html/testget.php on line 5
There's nothing wrong with the URL.
Symptom 2 : Sometimes
A couple of times it took a long time (30s?) before segfaulting apache : I can't seem to reproduce it reliably, but here's the backtrace from one instance if it helps...
(gdb) bt
#0 0xef620cdc in seg3 ()
#1 0x4d194 in _emalloc (size=10439360, __zend_filename=0x20e2c8 "", __zend_lineno=16, __zend_orig_filename=0x1020e2c0 "", __zend_orig_lineno=48) at zend_alloc.c:153
#2 0x4d750 in _estrndup (s=0xef8222f8 "", length=278839264, __zend_filename=0x1625e0 "url.c", __zend_lineno=111, __zend_orig_filename=0x0, __zend_orig_lineno=0) at zend_alloc.c:279
#3 0xa4634 in url_parse (string=0x20e2d8 "http://palladium:11000/~simonr/links.html") at url.c:111
#4 0x4a164 in php3_fopen_url_wrapper (path=0x20e2d8 "http://palladium:11000/~simonr/links.html", mode=0x15f9e0 "r", options=4, issock=0xefffd03c, socketd=0xefffd038, opened_path=0x0) at fopen-wrappers.c:450
#5 0x49cd0 in php3_fopen_wrapper (path=0x20e2d8 "http://palladium:11000/~simonr/links.html", mode=0x15f9e0 "r", options=4, issock=0xefffd03c, socketd=0xefffd038, opened_path=0x0) at fopen-wrappers.c:193
#6 0x825b4 in php3_file (ht=-8212, return_value=0xeffff0e0, list=0x1d3e58, plist=0x1d3e84, this_ptr=0x0, return_value_used=1) at file.c:538
#7 0xc2c50 in execute (op_array=0x211128) at zend_execute.c:1476
#8 0x47478 in php_execute_script (primary_file=0xeffff6d8) at main.c:1226
#9 0x63dec in apache_php_module_main (r=0x201f28, fd=19, display_source_mode=0) at sapi_apache.c:88
#10 0x452f4 in send_php ()
#11 0x4534c in send_parsed_php ()
#12 0xd1b5c in ap_invoke_handler ()
#13 0xedfa0 in process_request_internal ()
#14 0xee024 in ap_process_request ()
#15 0xe1bf8 in child_main ()
#16 0xe1f84 in make_child ()
#17 0xe20a8 in startup_children ()
#18 0xe2a98 in standalone_main ()
#19 0xe3680 in main ()
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Last updated: Sun Oct 11 06:00:01 2026 UTC |
Ok, I got it working, but something odd is still up. It might be a chaotic thing to do with the build, but when I added debugging stuff to it seemed to right itself. The line that I considered most (url.c: ()) if ((err=regcomp(&re, "^(([^@:]+)(:([^@:]+))?@)?([^:@]+)(:([^:@]+))?", REG_EXTENDED)) || (err=regexec(&re, result, 10, subs, 0))) { /* FAILURE */ } Now, I'm wondering if the order of evaluation is guaranteed in this circumstance, and whether the second part might be executed even if the first part fails (hence overwriting err). *shrug*