Issue 12721

Summary:	gcc3_linux_intel UNO bridge broken
Product:	udk	Reporter:	Stephan Bergmann <stephan.bergmann.secondary>
Component:	code	Assignee:	Stephan Bergmann <stephan.bergmann.secondary>
Status:	CLOSED FIXED	QA Contact:	issues@udk <issues>
Severity:	Trivial
Priority:	P3	CC:	issues
Version:	644
Target Milestone:	OOo 1.1 Beta2
Hardware:	PC
OS:	Linux, all
Issue Type:	DEFECT	Latest Confirmation in:	---
Developer Difficulty:	---

Description Stephan Bergmann 2003-03-27 14:22:42 UTC

Depending on how a compiler generates code (e.g., GCC 3.2.2 vs. GCC 3.0.1), a
bug in the gcc3_linux_intel UNO bridge is revealed:  If a C/C++ function returns
a complex object (class, struct, union), the 386 ABI specifies that the caller
pushes the address for that object on the stack, and the callee removes it from
the stack.  The code in the UNO bridge (callVirtualMethod in
bridges/source/cpp_uno/gcc3_linux_intel/uno2cpp.cxx) erroneously assumes that
the callee does *not* remove the address from the stack, corrupting the stack
and.  Can be verified with testtools' bridgetest_inprocess.

This can be a problem for other gcc*_intel UNO bridges as well.

Comment 1 Stephan Bergmann 2003-03-27 14:26:16 UTC

fixed

Comment 2 hans_werner67 2003-04-01 12:02:27 UTC

Comment 3 Stephan Bergmann 2003-04-17 09:26:57 UTC

verified

Comment 4 Stephan Bergmann 2003-04-29 16:08:58 UTC

verified in SRX644m12s1