diff --git a/src/analyze.cpp b/src/analyze.cpp index 321915d6ea437535024338271e2acee8cd4540d9..222874b87571fa8f2dad63cb7f88d31b393dd338 100644 --- a/src/analyze.cpp +++ b/src/analyze.cpp @@ -2445,6 +2445,9 @@ static TypeTableEntry *analyze_array_access_expr(CodeGen *g, ImportTableEntry *i if (array_type->id == TypeTableEntryIdInvalid) { return_type = g->builtin_types.entry_invalid; } else if (array_type->id == TypeTableEntryIdArray) { + if (array_type->data.array.len == 0) { + add_node_error(g, node, buf_sprintf("out of bounds array access")); + } return_type = array_type->data.array.child_type; } else if (array_type->id == TypeTableEntryIdPointer) { return_type = array_type->data.pointer.child_type; diff --git a/test/run_tests.cpp b/test/run_tests.cpp index 266720ccbd1a6e57f7162559d608ae15ea863eaf..3316c792cb00f873d28d0b4beb6515b8b2a40a19 100644 --- a/test/run_tests.cpp +++ b/test/run_tests.cpp @@ -1814,6 +1814,13 @@ fn derp(){} add_compile_fail_case("assign null to non-nullable pointer", R"SOURCE( const a: &u8 = null; )SOURCE", 1, ".tmp_source.zig:2:16: error: expected maybe type, got '&u8'"); + + add_compile_fail_case("indexing an array of size zero", R"SOURCE( +const array = []u8{}; +fn foo() { + const pointer = &array[0]; +} + )SOURCE", 1, ".tmp_source.zig:4:27: error: out of bounds array access"); } //////////////////////////////////////////////////////////////////////////////