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author | Arnaud Charlet <charlet@gcc.gnu.org> | 2012-01-30 12:36:09 +0100 |
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committer | Arnaud Charlet <charlet@gcc.gnu.org> | 2012-01-30 12:36:09 +0100 |
commit | b688e030537ddec071ff506e1faf04ffab47f4dd (patch) | |
tree | 3775dd48e4a8efbdbf1925a76b5de9be33437bb5 /gcc/ada | |
parent | 1423761633d64bf0547ca2583fe4ef5cc67b4b83 (diff) | |
download | gcc-b688e030537ddec071ff506e1faf04ffab47f4dd.zip gcc-b688e030537ddec071ff506e1faf04ffab47f4dd.tar.gz gcc-b688e030537ddec071ff506e1faf04ffab47f4dd.tar.bz2 |
[multiple changes]
2012-01-30 Thomas Quinot <quinot@adacore.com>
* a-strhas.ads: Document risk of collision attack.
2012-01-30 Yannick Moy <moy@adacore.com>
* gnat_ugn.texi: Minor update wrt warning switches.
From-SVN: r183706
Diffstat (limited to 'gcc/ada')
-rw-r--r-- | gcc/ada/ChangeLog | 8 | ||||
-rw-r--r-- | gcc/ada/a-strhas.ads | 3 | ||||
-rw-r--r-- | gcc/ada/gnat_ugn.texi | 23 |
3 files changed, 31 insertions, 3 deletions
diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog index 624aa11..74c0c95 100644 --- a/gcc/ada/ChangeLog +++ b/gcc/ada/ChangeLog @@ -1,3 +1,11 @@ +2012-01-30 Thomas Quinot <quinot@adacore.com> + + * a-strhas.ads: Document risk of collision attack. + +2012-01-30 Yannick Moy <moy@adacore.com> + + * gnat_ugn.texi: Minor update wrt warning switches. + 2012-01-30 Vincent Celier <celier@adacore.com> * prj-nmsc.adb (Check_Interfaces): Report an error when a diff --git a/gcc/ada/a-strhas.ads b/gcc/ada/a-strhas.ads index c2574d1..58389c2 100644 --- a/gcc/ada/a-strhas.ads +++ b/gcc/ada/a-strhas.ads @@ -18,5 +18,8 @@ pragma Compiler_Unit; with Ada.Containers; function Ada.Strings.Hash (Key : String) return Containers.Hash_Type; +-- Note: this hash function has predictable collisions and is subject +-- to equivalent substring attacks. It is not suitable to construct a hash +-- table keyed on possibly malicious user input. pragma Pure (Ada.Strings.Hash); diff --git a/gcc/ada/gnat_ugn.texi b/gcc/ada/gnat_ugn.texi index b39a0c3..434ff69 100644 --- a/gcc/ada/gnat_ugn.texi +++ b/gcc/ada/gnat_ugn.texi @@ -7,7 +7,7 @@ @c o @c G N A T _ U G N o @c o -@c Copyright (C) 1992-2011, Free Software Foundation, Inc. o +@c Copyright (C) 1992-2012, Free Software Foundation, Inc. o @c o @c oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo @@ -5092,10 +5092,12 @@ switch are @option{-gnatwd} (implicit dereferencing), @option{-gnatwh} (hiding), @option{-gnatw.h} (holes (gaps) in record layouts) +@option{-gnatw.i} (overlapping actuals), @option{-gnatwl} (elaboration warnings), @option{-gnatw.l} (inherited aspects), -@option{-gnatw.o} (warn on values set by out parameters ignored) -and @option{-gnatwt} (tracking of deleted conditional code). +@option{-gnatw.o} (warn on values set by out parameters ignored), +@option{-gnatwt} (tracking of deleted conditional code) +and @option{-gnatw.u} (unordered enumeration), All other optional warnings are turned on. @item -gnatwA @@ -5671,6 +5673,21 @@ useful for detecting deactivated code in certified applications. @cindex @option{-gnatwT} (@command{gcc}) This switch suppresses warnings for tracking of deleted conditional code. +@item -gnatw.t +@emph{Activate warnings on suspicious contracts.} +@cindex @option{-gnatw.t} (@command{gcc}) +This switch activates warnings on suspicious postconditions (whether a +pragma @code{Postcondition} or a @code{Post} aspect in Ada 2012). A +function postcondition is suspicious when it does not mention the result +of the function. A procedure postcondition is suspicious when it only +refers to the pre-state of the procedure, because in that case it should +rather be expressed as a precondition. + +@item -gnatw.T +@emph{Suppress warnings on suspicious contracts.} +@cindex @option{-gnatw.T} (@command{gcc}) +This switch suppresses warnings on suspicious postconditions. + @item -gnatwu @emph{Activate warnings on unused entities.} @cindex @option{-gnatwu} (@command{gcc}) |