diff options
author | João Abecasis <joao.abecasis@nokia.com> | 2012-01-30 14:50:04 +0100 |
---|---|---|
committer | Qt by Nokia <qt-info@nokia.com> | 2012-02-07 09:47:51 +0100 |
commit | 5a92dd612472378ec329d380fdc8fe609478b06c (patch) | |
tree | 3f48a2970f9a0d7f81b09e3c91035a250ee0c05c /src/plugins | |
parent | b8cf1d6bdcaefaa610014a742808af3ab2c6fe06 (diff) |
Detect incompatibilities in repeated type registration
QMetaType used to register a typeName and factory functions for
creation/destruction of objects. While it would be possible for a single
type name to be registered matching different actual types and memory
layouts, there was little that could be done about it.
Now that QMetaType is tracking type information with a direct impact on
data layout and ABI (size and type flags) it is important that we check
and detect binary incompatibilities as early as possible.
[Such incompatibilities could arise from type name re-use (technically,
ODR violations) or, more commonly, as version mismatch between different
shared libraries or plugins.]
Only type size and flags are checked as function pointers to inline and
template or otherwise non-exported functions could trivially differ
across translation units and shared libraries.
When registering typedef types, a check is made to ensure the same name
doesn't get registered as different types.
Change-Id: I8211c3de75d4854ce8fafdb620d3a931c206e0c3
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Diffstat (limited to 'src/plugins')
0 files changed, 0 insertions, 0 deletions