optimize scanString to not run the regex more than once

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/test_core.py b/tests/test_core.py
index b766ac74..189da2bc 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -7285,6 +7285,18 @@ date: 18.07.2013w; day 18, month  7, year 2013, extra: 201, 3
     '''
     self.do_run(src, '4779 4779')
 
+  def test_sscanf_float(self):
+    src = r'''
+      #include "stdio.h"
+
+      int main(){
+        float f1, f2, f3, f4, f5, f6, f7, f8, f9;
+        sscanf("0.512 0.250x5.129_-9.98 1.12*+54.32E3 +54.32E3^87.5E-3 87.5E-3$", "%f %fx%f_%f %f*%f %f^%f %f$", &f1, &f2, &f3, &f4, &f5, &f6, &f7, &f8, &f9);
+        printf("\n%f, %f, %f, %f, %f, %f, %f, %f, %f\n", f1, f2, f3, f4, f5, f6, f7, f8, f9);
+      }
+    '''
+    self.do_run(src, '\n0.512000, 0.250000, 5.129000, -9.980000, 1.120000, 54320.000000, 54320.000000, 0.087500, 0.087500\n')
+
   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()