| Summary: | [3.4 Regression] ICE when returning a copy of a packed member | ||
|---|---|---|---|
| Product: | gcc | Reporter: | jdboyer |
| Component: | c++ | Assignee: | Mark Mitchell <mark> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | gcc-bugs, giovannibajo, pawel_sikora, sayle |
| Priority: | P2 | ||
| Version: | 3.4.3 | ||
| Target Milestone: | 3.4.5 | ||
| Host: | Target: | ||
| Build: | Known to work: | 3.3.3 | |
| Known to fail: | 3.4.0 | Last reconfirmed: | 2005-03-23 02:53:32 |
| Bug Depends on: | 13744 | ||
| Bug Blocks: | |||
Defining a class method which returns a copy of one of its members, and this member is declared "packed", and this member is from another class type, causes an internal compiler error when this method is called. The bug was verified on both gcc 3.4.2 and 3.4.3, on i686-linux and powerpc- linux. The following simple program will crash g++ when compiled with -DSHOW_ICE. --------------------------------------------------------------------------- class A { public: int i; A() {} A(const A& a) { i = a.i; } }; class B { #ifdef SHOW_ICE A a __attribute__((packed)); #else A a; #endif public: B() {} A GetA() { return a; } }; int main() { B b; return b.GetA().i; } --------------------------------------------------------------------------- Jean-Denis Boyer, Mediatrix Telecom Inc.