diff options
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/c-opts.c | 1 | ||||
| -rw-r--r-- | gcc/c.opt | 4 | ||||
| -rw-r--r-- | gcc/common.opt | 4 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr34351.c | 4 |
7 files changed, 25 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index fefe8c2f3dd..4d11666e715 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,14 @@ 2008-02-26 Manuel Lopez-Ibanez <manu@gcc.gnu.org> + PR 34351 + * doc/invoke.texi (-Wall): Add -Wvolatile-register-var. + * c-opts.c (c_common_handle_option): Wall enables + Wvolatile-register-var. + * common.opt: Move Wvolatile-register-var to... + * c.opt: ...here. + +2008-02-26 Manuel Lopez-Ibanez <manu@gcc.gnu.org> + * common.opt (Wlarger-than=): New. * doc/invoke.texi (Warning Options): Replace -Wlarger-than- with -Wlarger-than=. diff --git a/gcc/c-opts.c b/gcc/c-opts.c index 4cb76872be3..1a59ac46964 100644 --- a/gcc/c-opts.c +++ b/gcc/c-opts.c @@ -407,6 +407,7 @@ c_common_handle_option (size_t scode, const char *arg, int value) if (warn_strict_overflow == -1) warn_strict_overflow = value; warn_array_bounds = value; + warn_volatile_register_var = value; /* Only warn about unknown pragmas that are not in system headers. */ diff --git a/gcc/c.opt b/gcc/c.opt index 72165b96660..d3f81b0e1c7 100644 --- a/gcc/c.opt +++ b/gcc/c.opt @@ -465,6 +465,10 @@ Wvla 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. diff --git a/gcc/common.opt b/gcc/common.opt index 5c62510f700..48a1f80c3e1 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -232,10 +232,6 @@ Wunused-variable 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 diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 6a80373e43d..7e444c0370c 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -2683,6 +2683,7 @@ Options} and @ref{Objective-C and Objective-C++ Dialect Options}. -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 @@ -4017,7 +4018,8 @@ the variable length array. @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 +@option{-Wall}. @item -Wdisabled-optimization @opindex Wdisabled-optimization diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 8fb14f23f53..ee8eea17bc5 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,4 +1,8 @@ 2008-02-26 Manuel Lopez-Ibanez <manu@gcc.gnu.org> + + * gcc.dg/pr34351.c: New. + +2008-02-26 Manuel Lopez-Ibanez <manu@gcc.gnu.org> * gcc.dg/Wlarger-than2.c: New. diff --git a/gcc/testsuite/gcc.dg/pr34351.c b/gcc/testsuite/gcc.dg/pr34351.c new file mode 100644 index 00000000000..90dcfa1e5f7 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr34351.c @@ -0,0 +1,4 @@ +/* { dg-do compile } */ +/* { dg-options "-Wall" } */ + +register int * volatile x asm ("r13"); /* { dg-warning "optimization may eliminate reads and/or writes to register variables" } */ |