2 errors... mozilla pull from evening (PST) of March 9, 1999. NSPR pull and build from March 8, 1999. Solaris 2.6, gcc 2.7.2.3, purify. **** Purify instrumented ./apprunner.pure (pid 1154) **** IPR: Invalid pointer read: * This is occurring while in: strlen [rtlib.o] DLLErrorInternal [prlink.c:131] PR_LoadLibrary [prlink.c:732] nsDll::Load() [xcDll.cpp:150] nsComponentManagerImpl::LoadFactory(nsFactoryEntry*,nsIFactory**) [nsComponentManager.cpp:797] nsComponentManagerImpl::FindFactory(const nsID&,nsIFactory**) [nsComponentManager.cpp:903] nsComponentManagerImpl::CreateInstance(const nsID&,nsISupports*,const nsID&,void**) [nsComponentManager.cpp:1061] nsComponentManager::CreateInstance(const nsID&,nsISupports*,const nsID&,void**) [nsRepository.cpp:67] nsServiceManagerImpl::GetService(const nsID&,const nsID&,nsISupports**,nsIShutdownListener*) [nsServiceManager.cpp:229] nsServiceManager::GetService(const nsID&,const nsID&,nsISupports**,nsIShutdownListener*) [nsServiceManager.cpp:391] nsWebShell::CreatePluginHost(int) [nsWebShell.cpp:406] nsWebShell::Init(void*,int,int,int,int,nsScrollPreference,int,int) [nsWebShell.cpp:727] nsWebShellWindow::Initialize(nsIWidget*,nsIAppShell*,nsIURL*,nsString&,nsIStream Observer*,nsIXULWindowCallbacks*,int,int) [nsWebShellWindow.cpp:227] nsAppShellService::CreateTopLevelWindow(nsIWidget*,nsIURL*,nsString&,nsIWidget*& ,nsIStreamObserver*,nsIXULWindowCallbacks*,int,int) [nsAppShellService.cpp:233] main [nsAppRunner.cpp:275] _start [crt1.o] * Reading 90 bytes from 0xebb3062c between the heap and the stack. **** Purify instrumented ./apprunner.pure (pid 1154) **** IPR: Invalid pointer read: * This is occurring while in: memcpy [rtlib.o] PR_SetErrorText [prerror.c:69] DLLErrorInternal [prlink.c:131] PR_LoadLibrary [prlink.c:732] nsDll::Load() [xcDll.cpp:150] nsComponentManagerImpl::LoadFactory(nsFactoryEntry*,nsIFactory**) [nsComponentManager.cpp:797] nsComponentManagerImpl::FindFactory(const nsID&,nsIFactory**) [nsComponentManager.cpp:903] nsComponentManagerImpl::CreateInstance(const nsID&,nsISupports*,const nsID&,void**) [nsComponentManager.cpp:1061] nsComponentManager::CreateInstance(const nsID&,nsISupports*,const nsID&,void**) [nsRepository.cpp:67] nsServiceManagerImpl::GetService(const nsID&,const nsID&,nsISupports**,nsIShutdownListener*) [nsServiceManager.cpp:229] nsServiceManager::GetService(const nsID&,const nsID&,nsISupports**,nsIShutdownListener*) [nsServiceManager.cpp:391] nsWebShell::CreatePluginHost(int) [nsWebShell.cpp:406] nsWebShell::Init(void*,int,int,int,int,nsScrollPreference,int,int) [nsWebShell.cpp:727] nsWebShellWindow::Initialize(nsIWidget*,nsIAppShell*,nsIURL*,nsString&,nsIStream Observer*,nsIXULWindowCallbacks*,int,int) [nsWebShellWindow.cpp:227] nsAppShellService::CreateTopLevelWindow(nsIWidget*,nsIURL*,nsString&,nsIWidget*& ,nsIStreamObserver*,nsIXULWindowCallbacks*,int,int) [nsAppShellService.cpp:233] main [nsAppRunner.cpp:275] _start [crt1.o] * Reading 90 bytes from 0xebb3062c between the heap and the stack.

New bugs should be assigned to module owners.

The system function dlerror() is called when the dlopen() call from PR_LoadLibrary fails to load the library (most likely, either because the library doesn't exist or incorrect path to the library is used).Dlerror() should return either a pointer to a null-terminated string or NULL. The nspr function DLLErrorInternal() passes the non-NULL string pointer from dlopen() to strlen and memcpy. I could reproduce this purify warning by trying to load a non-existent library. The problem appears to be either 1. purify incorrectly reporting a IPR error or 2. the dlerror() function in the Solaris libdl library returning a pointer to invalid memory.

NSPR now has its own Bugzilla product. Moving this bug to the NSPR product.

The pointer returned by dlerror() is from a valid memory address; the truss output shows the corresponding mmap call. This bug should be closed as invalid.

verified invalid