https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78635
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |msebor at gcc dot gnu.org
--- Comment #11 from Martin Sebor <msebor at gcc dot gnu.org> ---
This is not a dupe of bug 68489. The latter is about GCC not issuing a
diagnostic for arrays of a struct with a flexible array member. The global
array in the following test case (copied from that bug) is silently accepted by
GCC (due to bug 71290 GCC 6 doesn't even issue the -Wpedantic warning):
struct A {
int n;
int a [];
};
struct A a[2];
y.C:3:12: warning: ISO C++ forbids zero-size array ‘a’ [-Wpedantic]
int a [];
^
This bug is about an ICE for more involved definitions of arrays of structs
with flexible array members. The ICE is new in GCC 6, and a separate problem
from the absence of diagnostic. It may be that rejecting this code will also
avoid the ICE, but I think it's best to track those problems separately.
Otherwise it's easy to open a new bug for the ICE even after reviewing bug
68489 (as I myself just did in bug 80135).
