------- Comment #3 from manu at gcc dot gnu dot org 2007-12-13 13:03 ------- Moreover, the option is defined in common.opt when it is C/C++ specific.
Untested patch: Index: gcc/common.opt =================================================================== --- gcc/common.opt (revision 130605) +++ gcc/common.opt (working copy) @@ -213,10 +213,6 @@ Common Var(warn_unused_variable) Warning Warn when a variable is unused -Wvolatile-register-var -Common Var(warn_register_var) Warning -Warn when a register variable is declared volatile - Wcoverage-mismatch Common RejectNegative Var(warn_coverage_mismatch) Warning Warn instead of error in case profiles in -fprofile-use do not match Index: gcc/c.opt =================================================================== --- gcc/c.opt (revision 130605) +++ gcc/c.opt (working copy) @@ -465,6 +465,10 @@ C ObjC C++ ObjC++ Var(warn_vla) Init(-1) Warning Warn if a variable length array is used +Wvolatile-register-var +C ObjC C++ ObjC++ Var(warn_volatile_register_var) Warning +Warn when a register variable is declared volatile + Wwrite-strings C ObjC C++ ObjC++ Var(warn_write_strings) Warning In C++, nonzero means warn about deprecated conversion from string literals to `char *'. In C, similar warning, except that the conversion is of course not deprecated by the ISO C standard. Index: gcc/c-opts.c =================================================================== --- gcc/c-opts.c (revision 130605) +++ gcc/c-opts.c (working copy) @@ -405,6 +405,7 @@ warn_address = value; warn_strict_overflow = value; warn_array_bounds = value; + warn_volatile_register_var = value; /* Only warn about unknown pragmas that are not in system headers. */ Index: gcc/doc/invoke.texi =================================================================== --- gcc/doc/invoke.texi (revision 130605) +++ gcc/doc/invoke.texi (working copy) @@ -2656,6 +2656,7 @@ -Wunused-label @gol -Wunused-value @gol -Wunused-variable @gol +-Wvolatile-register-var @gol } Note that some warning flags are not implied by @option{-Wall}. Some of @@ -3902,7 +3903,8 @@ @opindex Wno-volatile-register-var Warn if a register variable is declared volatile. The volatile modifier does not inhibit all optimizations that may eliminate reads -and/or writes to register variables. +and/or writes to register variables. This warning is enabled by [EMAIL PROTECTED] @item -Wdisabled-optimization @opindex Wdisabled-optimization -- manu at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |manu at gcc dot gnu dot org Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2007-12-13 13:03:53 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34351