diff options
| author | Marek Polacek <polacek@redhat.com> | 2024-08-01 10:35:38 -0400 |
|---|---|---|
| committer | Marek Polacek <polacek@redhat.com> | 2024-08-02 14:42:17 -0400 |
| commit | 5ebfaf2d4994c124ce81aa0abd7eaa1529644749 (patch) | |
| tree | f4ac1194f8e27d665c118531d16f94589dd91556 | |
| parent | 5b4476a165565cb20729c0a97a3f43b060595209 (diff) | |
| download | gcc-5ebfaf2d4994c124ce81aa0abd7eaa1529644749.zip gcc-5ebfaf2d4994c124ce81aa0abd7eaa1529644749.tar.gz gcc-5ebfaf2d4994c124ce81aa0abd7eaa1529644749.tar.bz2 | |
c++: Move -Wdangling-reference to -Wextra
Despite a number of mitigations (don't warn for std::span-like classes,
lambdas, adding [[gnu::no_dangling]], etc.), the warning still seems to
cause some grief. Let's move the warning to -Wextra, then.
gcc/c-family/ChangeLog:
* c.opt (Wdangling-reference): Move from -Wall to -Wextra.
gcc/ChangeLog:
* doc/invoke.texi: Document that -Wdangling-reference is
enabled by -Wextra.
| -rw-r--r-- | gcc/c-family/c.opt | 2 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 3 |
2 files changed, 3 insertions, 2 deletions
diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt index a52682d..979f17a 100644 --- a/gcc/c-family/c.opt +++ b/gcc/c-family/c.opt @@ -604,7 +604,7 @@ C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_dangling_pointer) Warn Warn for uses of pointers to auto variables whose lifetime has ended. Wdangling-reference -C++ ObjC++ Var(warn_dangling_reference) Warning LangEnabledBy(C++ ObjC++, Wall) +C++ ObjC++ Var(warn_dangling_reference) Warning LangEnabledBy(C++ ObjC++, Wextra) Warn when a reference is bound to a temporary whose lifetime has ended. Wdate-time diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 54ecd9a..0fe99ca 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -3962,7 +3962,7 @@ that has a pointer data member and a trivial destructor. The warning can be disabled by using the @code{gnu::no_dangling} attribute (@pxref{C++ Attributes}). -This warning is enabled by @option{-Wall}. +This warning is enabled by @option{-Wextra}. @opindex Wdelete-non-virtual-dtor @opindex Wno-delete-non-virtual-dtor @@ -6481,6 +6481,7 @@ name is still supported, but the newer name is more descriptive.) -Wcalloc-transposed-args -Wcast-function-type -Wclobbered +-Wdangling-reference @r{(C++ only)} -Wdeprecated-copy @r{(C++ and Objective-C++ only)} -Wempty-body -Wenum-conversion @r{(only for C/ObjC)} |