diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ba8d99cf0..a22a9291e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -52,6 +52,11 @@ jobs:
           cd test
           python3.exe src/tester.py ..\build\${{ matrix.build_type }}\c3c.exe test_suite/
 
+      - name: Compile run stdlib tests
+        run: |
+          cd test
+          ..\build\${{ matrix.build_type }}\c3c.exe compile-test stdlib\conv_tests.c3 -g1 --safe
+
       - name: upload artifacts
         uses: actions/upload-artifact@v3
         with:
diff --git a/lib/std/libc.c3 b/lib/std/libc.c3
index f8e2775d3..d6e91a6e9 100644
--- a/lib/std/libc.c3
+++ b/lib/std/libc.c3
@@ -64,9 +64,14 @@ extern fn void srand(uint seed);
 
 define JmpBuf = CInt[$$JMP_BUF_SIZE];
 
-extern fn CInt setjmp(JmpBuf* buffer);
 extern fn void longjmp(JmpBuf* buffer, CInt value);
-
+$if (env::OS_TYPE == OsType.WIN32):
+// TODO win32 aarch64
+extern fn CInt _setjmp(void* frameptr, JmpBuf* buffer);
+macro CInt setjmp(JmpBuf* buffer) = _setjmp($$frameaddress(), buffer);
+$else:
+extern fn CInt setjmp(JmpBuf* buffer);
+$endif;
 // MB functions omitted
 
 // string
diff --git a/src/compiler/enums.h b/src/compiler/enums.h
index 7f08d1700..d899c475c 100644
--- a/src/compiler/enums.h
+++ b/src/compiler/enums.h
@@ -841,6 +841,7 @@ typedef enum
 	BUILTIN_FLOOR,
 	BUILTIN_FMA,
 	BUILTIN_FMULADD,
+	BUILTIN_FRAMEADDRESS,
 	BUILTIN_FSHL,
 	BUILTIN_FSHR,
 	BUILTIN_GET_ROUNDING_MODE,
diff --git a/src/compiler/llvm_codegen.c b/src/compiler/llvm_codegen.c
index d9954154a..70032454a 100644
--- a/src/compiler/llvm_codegen.c
+++ b/src/compiler/llvm_codegen.c
@@ -637,6 +637,7 @@ static void llvm_codegen_setup()
 	intrinsic_id.floor = lookup_intrinsic("llvm.floor");
 	intrinsic_id.flt_rounds = lookup_intrinsic("llvm.flt.rounds");
 	intrinsic_id.fma = lookup_intrinsic("llvm.fma");
+	intrinsic_id.frameaddress = lookup_intrinsic("llvm.frameaddress");
 	intrinsic_id.fshl = lookup_intrinsic("llvm.fshl");
 	intrinsic_id.fshr = lookup_intrinsic("llvm.fshr");
 	intrinsic_id.lifetime_end = lookup_intrinsic("llvm.lifetime.end");
diff --git a/src/compiler/llvm_codegen_builtins.c b/src/compiler/llvm_codegen_builtins.c
index 24dd44bfd..169dc0431 100644
--- a/src/compiler/llvm_codegen_builtins.c
+++ b/src/compiler/llvm_codegen_builtins.c
@@ -449,6 +449,14 @@ void llvm_emit_builtin_call(GenContext *c, BEValue *result_value, Expr *expr)
 		case BUILTIN_SHUFFLEVECTOR:
 			llvm_emit_shufflevector(c, result_value, expr);
 			return;
+		case BUILTIN_FRAMEADDRESS:
+		{
+			LLVMTypeRef type[2] = { llvm_get_type(c, type_voidptr), llvm_get_type(c, type_int) };
+			LLVMValueRef value = LLVMConstNull(type[1]);
+			value = llvm_emit_call_intrinsic(c, intrinsic_id.frameaddress, type, 1, &value, 1);
+			llvm_value_set(result_value, value, expr->type);
+			return;
+		}
 		case BUILTIN_REVERSE:
 			llvm_emit_reverse(c, result_value, expr);
 			return;
diff --git a/src/compiler/llvm_codegen_internal.h b/src/compiler/llvm_codegen_internal.h
index d90766a59..9f2477cab 100644
--- a/src/compiler/llvm_codegen_internal.h
+++ b/src/compiler/llvm_codegen_internal.h
@@ -134,6 +134,7 @@ typedef struct
 	unsigned floor;
 	unsigned flt_rounds;
 	unsigned fma;
+	unsigned frameaddress;
 	unsigned fshl;
 	unsigned fshr;
 	unsigned lifetime_end;
diff --git a/src/compiler/sema_builtins.c b/src/compiler/sema_builtins.c
index fac69bc08..9773212dc 100644
--- a/src/compiler/sema_builtins.c
+++ b/src/compiler/sema_builtins.c
@@ -284,6 +284,9 @@ bool sema_expr_analyse_builtin_call(SemaContext *context, Expr *expr)
 		case BUILTIN_GET_ROUNDING_MODE:
 			rtype = type_int;
 			break;
+		case BUILTIN_FRAMEADDRESS:
+			rtype = type_voidptr;
+			break;
 		case BUILTIN_SET_ROUNDING_MODE:
 			if (!sema_check_builtin_args(args,
 			                             (BuiltinArg[]) { BA_INTEGER },
@@ -551,6 +554,7 @@ static inline unsigned builtin_expected_args(BuiltinFunction func)
 		case BUILTIN_SYSCLOCK:
 		case BUILTIN_TRAP:
 		case BUILTIN_UNREACHABLE:
+		case BUILTIN_FRAMEADDRESS:
 			return 0;
 		case BUILTIN_ABS:
 		case BUILTIN_BITREVERSE:
diff --git a/src/compiler/symtab.c b/src/compiler/symtab.c
index 06516f450..b3ef2a6d1 100644
--- a/src/compiler/symtab.c
+++ b/src/compiler/symtab.c
@@ -203,6 +203,7 @@ void symtab_init(uint32_t capacity)
 	builtin_list[BUILTIN_FLOOR] = KW_DEF("floor");
 	builtin_list[BUILTIN_FMA] = KW_DEF("fma");
 	builtin_list[BUILTIN_FMULADD] = KW_DEF("fmuladd");
+	builtin_list[BUILTIN_FRAMEADDRESS] = KW_DEF("frameaddress");
 	builtin_list[BUILTIN_FSHL] = KW_DEF("fshl");
 	builtin_list[BUILTIN_FSHR] = KW_DEF("fshr");
 	builtin_list[BUILTIN_GET_ROUNDING_MODE] = KW_DEF("get_rounding_mode");