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| author | Vladislav Ivanishin <vlad@ispras.ru> | 2019-10-07 14:19:30 +0000 |
|---|---|---|
| committer | Vladislav Ivanishin <vlad@gcc.gnu.org> | 2019-10-07 14:19:30 +0000 |
| commit | ca95ce80e05143e64bca88ce5a6a38ee68894a95 (patch) | |
| tree | 6f4ded1ef05ab05be6b1593761807cd3df7ee17d /gcc | |
| parent | 19849d1585d6ff2cef5f495a93699703cf18b335 (diff) | |
| download | gcc-ca95ce80e05143e64bca88ce5a6a38ee68894a95.zip gcc-ca95ce80e05143e64bca88ce5a6a38ee68894a95.tar.gz gcc-ca95ce80e05143e64bca88ce5a6a38ee68894a95.tar.bz2 | |
[doc] -Wuninitialized doesn't do -Wclobbered's job
* gcc/doc/invoke.texi (-Wuninitialized): Don't mention the clobbered by
setjmp situation here. Fix a verb's ending: "the exact variables or
elements for which there are warnings depends" -> "... depend".
From-SVN: r276657
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 21 |
2 files changed, 16 insertions, 11 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index db122e2..8ecb2a1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2019-10-07 Vladislav Ivanishin <vlad@ispras.ru> + + * doc/invoke.texi (-Wuninitialized): Don't mention the clobbered by + setjmp situation here. Fix a verb's ending: "the exact variables or + elements for which there are warnings depends" -> "... depend". + 2019-10-07 Aldy Hernandez <aldyh@redhat.com> * ipa-prop.c (ipa_vr::nonzero_p): Add TYPE_UNSIGNED check. diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 0b56162..1077930 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -5578,21 +5578,20 @@ either specify @option{-Wextra -Wunused} (note that @option{-Wall} implies @item -Wuninitialized @opindex Wuninitialized @opindex Wno-uninitialized -Warn if an automatic variable is used without first being initialized -or if a variable may be clobbered by a @code{setjmp} call. In C++, -warn if a non-static reference or non-static @code{const} member -appears in a class without constructors. +Warn if an automatic variable is used without first being initialized. +In C++, warn if a non-static reference or non-static @code{const} +member appears in a class without constructors. If you want to warn about code that uses the uninitialized value of the variable in its own initializer, use the @option{-Winit-self} option. -These warnings occur for individual uninitialized or clobbered -elements of structure, union or array variables as well as for -variables that are uninitialized or clobbered as a whole. They do -not occur for variables or elements declared @code{volatile}. Because -these warnings depend on optimization, the exact variables or elements -for which there are warnings depends on the precise optimization -options and version of GCC used. +These warnings occur for individual uninitialized elements of +structure, union or array variables as well as for variables that are +uninitialized as a whole. They do not occur for variables or elements +declared @code{volatile}. Because these warnings depend on +optimization, the exact variables or elements for which there are +warnings depend on the precise optimization options and version of GCC +used. Note that there may be no warning about a variable that is used only to compute a value that itself is never used, because such |