Partial port of r59682 from py3k.

On Windows, when import fails to load a dll module, the message says
"error code 193" instead of a more informative text.

It turns out that FormatMessage needs additional parameters for some error codes.
For example: 193 means "%1 is not a valid Win32 application".
Since it is impossible to know which parameter to pass, we use
FORMAT_MESSAGE_IGNORE_INSERTS to get the raw message, which is still better
than the number.
This commit is contained in:
Amaury Forgeot d'Arc 2008-01-04 02:04:15 +00:00
parent d0d7d87869
commit e0b7695286
2 changed files with 6 additions and 1 deletions

View file

@ -12,6 +12,10 @@ What's New in Python 2.6 alpha 1?
Core and builtins
-----------------
- Improve some exception messages when Windows fails to load an extension
module. Now we get for example '%1 is not a valid Win32 application' instead
of 'error code 193'.
- Bug #1481296: Fixed long(float('nan'))!=0L.
- Issue #1640: Added math.isinf(x), math.isnan(x) and math.copysign(x, y)

View file

@ -194,7 +194,8 @@ dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
errorCode = GetLastError();
theLength = FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM, /* flags */
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, /* flags */
NULL, /* message source */
errorCode, /* the message (error) ID */
0, /* default language environment */