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# DP: Proposed patch for PR mudflap/24619 (instrumentation of dlopen)
Index: b/src/libmudflap/mf-hooks2.c
===================================================================
--- a/src/libmudflap/mf-hooks2.c
+++ b/src/libmudflap/mf-hooks2.c
@@ -1677,8 +1677,10 @@
size_t n;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (path);
- MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "dlopen path");
- p = dlopen (path, flags);
+ if (NULL != path) {
+ MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "dlopen path");
+ p = dlopen (path, flags);
+ }
if (NULL != p) {
#ifdef MF_REGISTER_dlopen
__mf_register (p, 0, MF_REGISTER_dlopen, "dlopen result");
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