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Fix error and crash related to using inside a DLL #147

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Fix error and crash related to using inside a DLL #147

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041f309
Fix base address for PE/COFF Windows DLL
SamWindell Jan 31, 2025
ff50f5f
Don't add DLL notifications if the module is a DLL
SamWindell Feb 3, 2025
8c232c7
Use GetModuleHandleA instead of macro version
SamWindell Feb 24, 2025
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53 changes: 28 additions & 25 deletions pecoff.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1013,7 +1013,7 @@ backtrace_initialize (struct backtrace_state *state,
#ifdef HAVE_WINDOWS_H
HMODULE nt_dll_handle;

module_handle = (uintptr_t) GetModuleHandle (NULL);
module_handle = (uintptr_t) GetModuleHandle (state->filename);
#endif

ret = coff_add (state, descriptor, error_callback, data,
Expand Down Expand Up @@ -1061,31 +1061,34 @@ backtrace_initialize (struct backtrace_state *state,
#endif

#ifdef HAVE_WINDOWS_H
nt_dll_handle = GetModuleHandleW (L"ntdll.dll");
if (nt_dll_handle)
if ((uintptr_t) GetModuleHandle (NULL) == module_handle)
{
LDR_REGISTER_FUNCTION register_func;
const char register_name[] = "LdrRegisterDllNotification";
register_func = (void*) GetProcAddress (nt_dll_handle,
register_name);

if (register_func)
{
PVOID cookie;
struct dll_notification_context *context
= backtrace_alloc (state,
sizeof (struct dll_notification_context),
error_callback, data);

if (context)
{
context->state = state;
context->data = data;
context->error_callback = error_callback;

register_func (0, &dll_notification, context, &cookie);
}
}
nt_dll_handle = GetModuleHandleW (L"ntdll.dll");
if (nt_dll_handle)
{
LDR_REGISTER_FUNCTION register_func;
const char register_name[] = "LdrRegisterDllNotification";
register_func = (void*) GetProcAddress (nt_dll_handle,
register_name);

if (register_func)
{
PVOID cookie;
struct dll_notification_context *context
= backtrace_alloc (state,
sizeof (struct dll_notification_context),
error_callback, data);

if (context)
{
context->state = state;
context->data = data;
context->error_callback = error_callback;

register_func (0, &dll_notification, context, &cookie);
}
}
}
}
#endif /* defined(HAVE_WINDOWS_H) */

Expand Down