diff --git a/stage0/sema.c b/stage0/sema.c
index a26de280da..6fd1d8cba9 100644
--- a/stage0/sema.c
+++ b/stage0/sema.c
@@ -2171,6 +2171,8 @@ static uint32_t floatTypeBits(InternPoolIndex ty) {
     case IP_INDEX_F16_TYPE: return 16;
     case IP_INDEX_F32_TYPE: return 32;
     case IP_INDEX_F64_TYPE: return 64;
+    case IP_INDEX_F80_TYPE: return 80;
+    case IP_INDEX_F128_TYPE: return 128;
     default: return 0;
     }
 }
diff --git a/stage0/stages_test.zig b/stage0/stages_test.zig
index a60ccf17e0..3e737cc525 100644
--- a/stage0/stages_test.zig
+++ b/stage0/stages_test.zig
@@ -103,7 +103,7 @@ const corpus_files = .{
     "../lib/std/os/uefi/tables/table_header.zig", // 214
     "../lib/std/zig/llvm.zig", // 247
     "../lib/compiler_rt/neghf2.zig", // 265 -- cross-module ZIR loading works; needs comptime eval (reify, struct_init)
-    //"../lib/compiler_rt/negxf2.zig", // 265 -- @export+func_fancy handled; body analysis incomplete
+    "../lib/compiler_rt/negxf2.zig", // 265 -- @export+func_fancy handled; body analysis incomplete
     //"../lib/compiler_rt/absvdi2.zig", // 311 -- @export+func_fancy handled; body analysis incomplete
     //"../lib/compiler_rt/absvsi2.zig", // 311 -- @export+func_fancy handled; body analysis incomplete
     //"../lib/compiler_rt/absvti2.zig", // 314 -- @export+func_fancy handled; body analysis incomplete