assigned to @lattner

The code in question is:

// Check for variable sized array reference.
if (TREE_CODE(TREE_TYPE(Array)) == ARRAY_TYPE) {
tree Domain = TYPE_DOMAIN(TREE_TYPE(Array));
if (Domain && TYPE_MAX_VALUE(Domain)) {
assert(TREE_CODE(TYPE_MAX_VALUE(Domain)) == INTEGER_CST &&
"Cannot have globals with variable size!");
}
}

Does MySQL try to create a variable sized global array on that line?

The MySQL source line complained about is:

template class List<set_var_base>;

Looks pretty much like a bug to me.

Reid.

header file declaring template that triggers error
from set_var.cc:

/****************************************************************************

Used templates

****************************************************************************/

#ifdef HAVE_EXPLICIT_TEMPLATE_INSTANTIATION

template class List<set_var_base>;

template class List_iterator_fast<set_var_base>; <--- LINE 3690

template class I_List_iterator<NAMED_LIST>;

#endif

List_iterator_fast is declared in "sql_list.h" (attached).

Reduced testcase:

struct sys_var {
unsigned name_length;

bool no_support_one_shot;
sys_var() {}
};

struct sys_var_thd : public sys_var {
};

extern sys_var_thd sys_auto_is_null;
sys_var *sys_variables = &sys_auto_is_null;

Fixed, testcase here: Regression/C++Frontend/2006-11-30-ConstantExprCrash.cpp

Patch here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20061127/040515.html

Thanks Ted!

-Chris