add test for #2175

1 files changed, 2 insertions, 0 deletions

diff --git a/emscripten.py b/emscripten.py
index eeb53bf7..26c7d6ef 100755
--- a/emscripten.py
+++ b/emscripten.py
@@ -780,6 +780,8 @@ def emscript_fast(infile, settings, outfile, libraries=[], compiler_engine=None,
   table_sizes = {}
   for k, v in metadata['tables'].iteritems():
     table_sizes[k] = str(v.count(',')) # undercounts by one, but that is what we want
+    #if settings['ASSERTIONS'] >= 2 and table_sizes[k] == 0:
+    #  print >> sys.stderr, 'warning: no function pointers with signature ' + k + ', but there is a call, which will abort if it occurs (this can result from undefined behavior, check for compiler warnings on your source files and consider -Werror)'
   funcs = re.sub(r"#FM_(\w+)#", lambda m: table_sizes[m.groups(0)[0]], funcs)
 
   # fix +float into float.0, if not running js opts