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| author | Ben Elliston <bje@au.ibm.com> | 2005-12-13 23:33:26 +0000 |
|---|---|---|
| committer | Ben Elliston <bje@gcc.gnu.org> | 2005-12-14 10:33:26 +1100 |
| commit | 690a704a4e5eda3745d4b0d650cba90a36702a64 (patch) | |
| tree | d72ae86b6320671af20df2fd5c12deb106455c3a /gcc/c-opts.c | |
| parent | 383eca9ccea8275baab7d6bdf5f464e113482dec (diff) | |
| download | gcc-690a704a4e5eda3745d4b0d650cba90a36702a64.zip gcc-690a704a4e5eda3745d4b0d650cba90a36702a64.tar.gz gcc-690a704a4e5eda3745d4b0d650cba90a36702a64.tar.bz2 | |
c-common.c (c_common_truthvalue_conversion): Generalise warning for addresses converted to booleans; not just function addresses.
* c-common.c (c_common_truthvalue_conversion): Generalise warning
for addresses converted to booleans; not just function addresses.
* c-typeck.c (build_binary_op): Warn for address comparisons which
can never be NULL (eg. func == NULL or &var == NULL).
* common.opt (Walways-true): New option.
* c-opts.c (c_common_handle_option): Set it with -Wall.
* doc/invoke.texi: Document it.
testsuite/
* gcc.dg/warn-addr-cmp.c: New test.
From-SVN: r108489
Diffstat (limited to 'gcc/c-opts.c')
| -rw-r--r-- | gcc/c-opts.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/c-opts.c b/gcc/c-opts.c index 86f2244..9968c9b 100644 --- a/gcc/c-opts.c +++ b/gcc/c-opts.c @@ -387,6 +387,7 @@ c_common_handle_option (size_t scode, const char *arg, int value) warn_switch = value; warn_strict_aliasing = value; warn_string_literal_comparison = value; + warn_always_true = value; /* Only warn about unknown pragmas that are not in system headers. */ |