toolchain/gcc/patches/4.2.4/307-locale_facets.patch

   1 This patch fixes a bug into ostream::operator<<(double) due to the wrong size
   2 passed into the __convert_from_v method. The wrong size is then passed to
   3 std::snprintf function, that, on uClibc, doens't handle sized 0 buffer.
   4
   5 Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
   6
   7 Index: gcc-4.2.3/libstdc++-v3/include/bits/locale_facets.tcc
   8 ===================================================================
   9 --- gcc-4.2.3.orig/libstdc++-v3/include/bits/locale_facets.tcc  2008-01-05 12:04:43.000000000 +0100
  10 +++ gcc-4.2.3/libstdc++-v3/include/bits/locale_facets.tcc       2008-05-21 13:45:51.877288338 +0200
  11 @@ -1145,7 +1145,7 @@
  12         const int __cs_size = __fixed ? __max_exp + __prec + 4
  13                                       : __max_digits * 2 + __prec;
  14         char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
  15 -       __len = std::__convert_from_v(_S_get_c_locale(), __cs, 0, __fbuf,
  16 +       __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size, __fbuf,
  17                                       __prec, __v);
  18  #endif
  19
  20 @@ -1779,7 +1779,7 @@
  21        // max_exponent10 + 1 for the integer part, + 2 for sign and '\0'.
  22        const int __cs_size = numeric_limits<long double>::max_exponent10 + 3;
  23        char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
  24 -      int __len = std::__convert_from_v(_S_get_c_locale(), __cs, 0, "%.*Lf",
  25 +      int __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size, "%.*Lf",
  26                                         0, __units);
  27  #endif
  28        string_type __digits(__len, char_type());