Handle %c in sscanf.

2 files changed, 32 insertions, 1 deletions

diff --git a/src/library.js b/src/library.js
index 900b3fee..284bf92a 100644
--- a/src/library.js
+++ b/src/library.js
@@ -2491,6 +2491,16 @@ LibraryManager.library = {
         continue;
       }
 
+      if (format[formatIndex] === '%' && format[formatIndex+1] == 'c') {
+        var argPtr = {{{ makeGetValue('varargs', 'argIndex', 'void*') }}};
+        argIndex += Runtime.getNativeFieldSize('void*');
+        fields++;
+        next = get();
+        {{{ makeSetValue('argPtr', 0, 'next', 'i8') }}}
+        formatIndex += 2;
+        continue;
+      }
+
       // remove whitespace
       while (1) {
         next = get();
diff --git a/tests/runner.py b/tests/runner.py
index 4c42bb6e..65591c79 100755
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -5341,9 +5341,30 @@ Pass: 0.000012 0.000012''')
           return(0);
         }
       '''
-
       self.do_run(src, '3\nday 19, month Nov, year 2012');
 
+    def test_sscanf_5(self):
+      src = r'''
+        #include "stdio.h"
+
+        static const char *colors[] = {
+          "  c black",
+          ". c #001100",
+          "X c #111100"
+        };
+
+        int main(){
+          unsigned char code;
+          char color[32];
+          int rcode;
+          for(int i = 0; i < 3; i++) {
+            rcode = sscanf(colors[i], "%c c %s", &code, color);
+            printf("%i, %c, %s\n", rcode, code, color);
+          }
+        }
+      '''
+      self.do_run(src, '2,  , black\n2, ., #001100\n2, X, #111100');
+
     def test_langinfo(self):
       src = open(path_from_root('tests', 'langinfo', 'test.c'), 'r').read()
       expected = open(path_from_root('tests', 'langinfo', 'output.txt'), 'r').read()