Bug 6781 – Regression(2.055): Segfault with error in local alias template

test.d: ubyte delegate() outer() { ubyte inner() { return typeof(return).init; } return &inner; } class C { uint[] sortedIndices; void makeSortedIndices() { auto comparator = outer(); bool greater(uint index1, uint index2) { return comparator() == 1; } sort!greater(sortedIndices); } } void sort(alias comp, T)(T data) { T less; size_t lessI = size_t.max, greaterI = data.length - 1; less[ti] = data[0..min(lessI, greaterI + 1)]; } $ dmd -c test.d -v binary dmd version v2.055 config /home/dsimcha/dmd2/linux/bin64/dmd.conf parse test importall test import object (/home/dsimcha/dmd2/linux/bin64/../../src/druntime/import/object.di) semantic test semantic2 test semantic3 test Segmentation fault

This is ice-on-invalid code. Reduced test case: void bug6781(alias xxx)() { some_error; } struct C6781 { void makeSortedIndices() { int greater; bug6781!greater(); } }