Commit 17404f8e6edea28fc70e074fd75101e1ed48b620 | zig

2 files changed, 16 insertions(+), 1 deletions(-)

src/Sema.zig+6-1

 @@ -6446,7 +6446,12 @@ fn analyzeCall(
             .extern_fn => return sema.fail(block, call_src, "{s} call of extern function", .{
                 @as([]const u8, if (is_comptime_call) "comptime" else "inline"),
             }),
-            else => unreachable,
+            else => {
+                assert(callee_ty.isPtrAtRuntime());
+                return sema.fail(block, call_src, "{s} call of function pointer", .{
+                    @as([]const u8, if (is_comptime_call) "comptime" else "inline"),
+                });
+            },
         };
         if (func_ty_info.is_var_args) {
             return sema.fail(block, call_src, "{s} call of variadic function", .{

test/cases/compile_errors/comptime_call_of_function_pointer.zig created+10

...	@@ -0,0 +1,10 @@
1	export fn entry() void {
2	const fn_ptr = @intToPtr(*align(1) fn () void, 0xffd2);
3	comptime fn_ptr();
4	}
5
6	// error
7	// backend=stage2
8	// target=native
9	//
10	// :3:20: error: comptime call of function pointer