add option to turn all unresolved references into dead functions (i.e., no compile-time warnings or errors, instead runtime aborts

2 files changed, 8 insertions, 2 deletions

diff --git a/src/jsifier.js b/src/jsifier.js
index 5c718c09..7db2ee70 100644
--- a/src/jsifier.js
+++ b/src/jsifier.js
@@ -512,7 +512,7 @@ function JSify(data, functionsOnly, givenFunctions) {
       } else if (LibraryManager.library.hasOwnProperty(shortident)) {
         item.JS = addFromLibrary(shortident);
       } else if (!LibraryManager.library.hasOwnProperty(shortident + '__inline')) {
-        if (!(item.ident in DEAD_FUNCTIONS)) {
+        if (!(item.ident in DEAD_FUNCTIONS) && !UNRESOLVED_AS_DEAD) {
           item.JS = 'var ' + item.ident + '; // stub for ' + item.ident;
           if (ASM_JS) {
             throw 'Unresolved symbol: ' + item.ident + ', this must be corrected for asm.js validation to succeed. Consider adding it to DEAD_FUNCTIONS.';
diff --git a/src/settings.js b/src/settings.js
index b342ae6d..c7ed7cd2 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -344,8 +344,14 @@ var PGO = 0; // Enables profile-guided optimization in the form of runtime check
              // can pass to DEAD_FUNCTIONS (you can also emit the list manually by
              // calling PGOMonitor.dump());
 var DEAD_FUNCTIONS = []; // A list of functions that no code will be emitted for, and
-                         // a runtime abort will happen if they are called
+                         // a runtime abort will happen if they are called. If
+                         // such a function is an unresolved reference, that is not
+                         // considered an error. 
                          // TODO: options to lazily load such functions
+var UNRESOLVED_AS_DEAD = 0; // Handle all unresolved functions as if they were in the
+                            // list of dead functions. This is a quick way to turn
+                            // all unresolved references into runtime aborts (and not
+                            // get compile-time warnings or errors on them).
 
 var EXPLICIT_ZEXT = 0; // If 1, generate an explicit conversion of zext i1 to i32, using ?: