gcc/patches/11_all_gcc49_default-warn-format-security.patch

   1 Enable -Wformat and -Wformat-security by default.
   2
   3
   4 --- a/gcc/c-family/c.opt
   5 +++ b/gcc/c-family/c.opt
   6 @@ -412,7 +412,7 @@ C ObjC C++ ObjC++ Var(warn_format_nonliteral) Warning LangEnabledBy(C ObjC C++ O
   7  Warn about format strings that are not literals
   8
   9  Wformat-security
  10 -C ObjC C++ ObjC++ Var(warn_format_security) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 2, 0)
  11 +C ObjC C++ ObjC++ Var(warn_format_security) Init(1) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 2, 0)
  12  Warn about possible security problems with format functions
  13
  14  Wformat-y2k
  15 @@ -424,7 +424,7 @@ C ObjC C++ ObjC++ Var(warn_format_zero_length) Warning LangEnabledBy(C ObjC C++
  16  Warn about zero-length formats
  17
  18  Wformat=
  19 -C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0)
  20 +C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format) Init(1) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0)
  21  Warn about printf/scanf/strftime/strfmon format string anomalies
  22
  23  Wignored-qualifiers
  24 --- a/gcc/doc/gcc.info
  25 +++ b/gcc/doc/gcc.info
  26 @@ -3451,6 +3451,8 @@ compiler warns that an unrecognized option is present.
  27            '-Wno-format-contains-nul', '-Wno-format-extra-args', and
  28            '-Wno-format-zero-length'.  '-Wformat' is enabled by '-Wall'.
  29
  30 +          This option is enabled by default in Gentoo.
  31 +
  32       '-Wno-format-contains-nul'
  33            If '-Wformat' is specified, do not warn about format strings
  34            that contain NUL bytes.
  35 @@ -3496,6 +3498,8 @@ compiler warns that an unrecognized option is present.
  36            future warnings may be added to '-Wformat-security' that are
  37            not included in '-Wformat-nonliteral'.)
  38
  39 +          This option is enabled by default in Gentoo.
  40 +
  41       '-Wformat-y2k'
  42            If '-Wformat' is specified, also warn about 'strftime' formats
  43            that may yield only a two-digit year.