sdcc/support/regression/tests/bug-2681.c

   1 /** bug-2681.c
   2     A bug which resulted in LLVM-compiled SDCC crashing.
   3 */
   4 #include <testfwk.h>
   5
   6 #include <ctype.h>
   7 #include <stdlib.h>
   8
   9 #if !defined(__SDCC_pdk14) && !defined(__SDCC_pdk15) // Not enough memory
  10 float simplified_atof(const char * s)
  11 {
  12     float value, fraction;
  13     signed char iexp;
  14
  15     for (value=0.0; isdigit(*s); s++)
  16     {
  17         value=10.0*value+(*s-'0');
  18     }
  19
  20     if (*s == '.')
  21     {
  22         s++;
  23         for (fraction=0.1; isdigit(*s); s++)
  24         {
  25             value+=(*s-'0')*fraction;
  26             fraction*=0.1;
  27         }
  28     }
  29
  30     if (toupper(*s)=='E')
  31     {
  32         s++;
  33         iexp=(signed char)atoi(s);
  34         {
  35             while(iexp!=0)
  36             {
  37                 if(iexp<0)
  38                 {
  39                     value*=0.1;
  40                     iexp++;
  41                 }
  42                 else
  43                 {
  44                     value*=10.0;
  45                     iexp--;
  46                 }
  47             }
  48         }
  49     }
  50
  51     return (value);
  52 }
  53 #endif
  54
  55 void testBug(void)
  56 {
  57 #if !defined(__SDCC_pdk14) && !defined(__SDCC_pdk15) // Not enough memory
  58   ASSERT(simplified_atof("0.0f") == 0.0f);
  59 #endif
  60 }
  61