The following snippet compiles fine with GCC versions prior to 3.4.3 and aborts with an ICE with 3.4.3:
struct S { int i; int a[]; }; S v = { 0, {} }; $ g++ -V 3.4.3 -c bug.cc bug.cc:6: internal compiler error: in tree_low_cst, at tree.c:3313 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. $ g++ -V 3.4.2 -c bug.cc $ g++ -V 3.4.1 -c bug.cc $ g++ -V 3.4.0 -c bug.cc $ g++ -V 3.3.3 -c bug.cc -- Summary: ICE in 3.4.3, regression from 3.4.2 Product: gcc Version: 3.4.3 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: bagnara at cs dot unipr dot it CC: gcc-bugs at gcc dot gnu dot org GCC host triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18581