fix build script exiting before all tests are completed.

build

@@ -183,7 +183,7 @@ EOF
 }
 
 run_test() {
-    file=$1 name=$2 output="" rc=0
+    file=$1 name=$2 output="" rc=0 failed=0
     parse_test "$file"
     hbc "$file" $hbc_flags >"$BUILD_PATH/test/$name.o" || return 1
     $linker "$BUILD_PATH/test/$name.o" -o "$BUILD_PATH/test/$name" || return 1
@@ -193,7 +193,7 @@ run_test() {
         rc=$?
         [ $rc -eq 124 ] && {
             error "timeout"
-            return 1
+            failed=1
         }
     else
         output=$("$BUILD_PATH/test/$name" $args_input 2>&1)
@@ -202,14 +202,15 @@ run_test() {
 
     [ "$rc" != "$exit_code" ] && {
         error "exit code $rc != $exit_code"
-        return 1
+        failed=1
     }
     [ -n "$stdout_expected" ] && [ "$output" != "$stdout_expected" ] && {
         error "output mismatch
 expected: $stdout_expected
 got:      $output"
-        return 1
+        failed=1
     }
+    return $failed
 }
 
 # todo: this spawns every test all at once. consider limiting to $(nproc) tests at once.
@@ -217,15 +218,19 @@ do_tests() {
     detect_linker
     mkdir -p "$BUILD_PATH/test" || die "failed to create test dir"
 
-    find "${TEST_DIR}/${test#all}" -type f | while IFS= read -r file; do
+    tmpfile=$(mktemp) || die "Failed to create temporary file"
+    find "${TEST_DIR}/${test#all}" -type f >"$tmpfile" || die "Find command failed"
+
+    while IFS= read -r file; do
         [ -f "$file" ] || continue
         test_name=$(basename "$file" .hb)
         log "Testing $test_name"
         (run_test "$file" "$test_name") &
-    done
-    wait
-}
+    done <"$tmpfile"
 
+    wait
+    rm -r "$tmpfile" "$BUILD_PATH/test"
+}
 do_build() {
     mkdir -p "$BUILD_PATH/$target" || die "failed to create $BUILD_PATH/$target"
     [ -w "$BUILD_PATH/$target" ] || die "no write permission"

src/test/lang/unix_timestamp.hb

@@ -0,0 +1,19 @@
+/*
+ * exit: 0
+ */
+
+$unix_timestamp := fn(year: uint, month: u8, day: u8, hour: u8, minute: u8, second: u8): uint {
+	is_leap := year % 4 == 0 & (year % 100 != 0 | year % 400 == 0)
+	days_since_epoch := (year - 1970) * 365 + (year - 1) / 4 - (year - 1) / 100 + (year - 1) / 400 - 477
+	idx := month - 1
+	sum_nonleap := (idx < 2) * idx * 31 + (idx >= 2) * (59 + (153 * (idx - 2) + 2) / 5)
+	total_days := days_since_epoch + day + sum_nonleap + is_leap * (month > 2)
+	return total_days * 86400 + hour * 3600 + minute * 60 + second
+}
+
+main := fn(): u8 {
+	r0 := unix_timestamp(2025, 1, 31, 21, 53, 26) != 1738360406
+	r1 := unix_timestamp(1970, 1, 1, 0, 0, 0) != 0
+	r2 := unix_timestamp(2038, 1, 19, 3, 14, 8) != 1 << 31
+	return r0 | r1 | r2
+}