handle empty inline asms; fixes #1729

3 files changed, 27 insertions, 6 deletions

diff --git a/src/intertyper.js b/src/intertyper.js
index 96db6966..d3640889 100644
--- a/src/intertyper.js
+++ b/src/intertyper.js
@@ -672,12 +672,14 @@ function intertyper(lines, sidePass, baseLineNums) {
       assert((item.tokens[5].text.match(/=/g) || []).length <= 1, 'we only support at most 1 exported variable from inline js: ' + item.ident);
       var i = 0;
       var params = [], args = [];
-      splitTokenList(tokensLeft[3].tokens).map(function(element) {
-        var ident = toNiceIdent(element[1].text);
-        var type = element[0].text;
-        params.push('$' + (i++));
-        args.push(ident);
-      });
+      if (tokensLeft[3].tokens) {
+        splitTokenList(tokensLeft[3].tokens).map(function(element) {
+          var ident = toNiceIdent(element[1].text);
+          var type = element[0].text;
+          params.push('$' + (i++));
+          args.push(ident);
+        });
+      }
       if (item.assignTo) item.ident = 'return ' + item.ident;
       item.ident = '(function(' + params + ') { ' + item.ident + ' })(' + args + ');';
       return { forward: null, ret: item, item: item };
diff --git a/tests/cases/emptyasm_le32.ll b/tests/cases/emptyasm_le32.ll
new file mode 100644
index 00000000..e123d3d5
--- /dev/null
+++ b/tests/cases/emptyasm_le32.ll
@@ -0,0 +1,16 @@
+; ModuleID = 'tests/hello_world.bc'
+
+@.str = private unnamed_addr constant [15 x i8] c"hello, world!\0A\00", align 1 ; [#uses=1 type=[15 x i8]*]
+
+; [#uses=0]
+define i32 @main() {
+entry:
+  %retval = alloca i32, align 4                   ; [#uses=1 type=i32*]
+  store i32 0, i32* %retval
+  call void asm sideeffect "", "~{memory}"() nounwind, !srcloc !0
+  %call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([15 x i8]* @.str, i32 0, i32 0)) ; [#uses=0 type=i32]
+  ret i32 1
+}
+
+; [#uses=1]
+declare i32 @printf(i8*, ...)
diff --git a/tests/test_core.py b/tests/test_core.py
index 69fb31f3..dd5b1e39 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -9044,6 +9044,9 @@ def process(filename):
         if '_noasm' in shortname and Settings.ASM_JS:
           print self.skip('case "%s" not relevant for asm.js' % shortname)
           continue
+        if '_le32' in shortname and not self.is_le32():
+          print self.skip('case "%s" not relevant for non-le32 target' % shortname)
+          continue
         self.emcc_args = emcc_args
         if os.path.exists(shortname + '.emcc'):
           if not self.emcc_args: continue