From 274462ef9ac65b4ce119d083eda59284714a760c Mon Sep 17 00:00:00 2001
From: Martin Liska <mliska@suse.cz>
Date: Sun, 13 Nov 2022 21:55:18 +0100
Subject: [PATCH] Partially revert 5c6546ca7d8cab1f1c129f5b55f709e2ceee0f94
gcc/ChangeLog:
* doc/gcc/gcc-command-options/options-that-control-static-analysis.rst:
Revert.
---
.../options-that-control-static-analysis.rst | 29 -------------------
1 file changed, 29 deletions(-)
diff --git a/gcc/doc/gcc/gcc-command-options/options-that-control-static-analysis.rst b/gcc/doc/gcc/gcc-command-options/options-that-control-static-analysis.rst
index 09bf049036f1..c0e06ea5b2d4 100644
--- a/gcc/doc/gcc/gcc-command-options/options-that-control-static-analysis.rst
+++ b/gcc/doc/gcc/gcc-command-options/options-that-control-static-analysis.rst
@@ -19,7 +19,6 @@ Options That Control Static Analysis
Enabling this option effectively enables the following warnings:
:option:`-Wanalyzer-allocation-size` |gol|
- :option:`-Wanalyzer-deref-before-check` |gol|
:option:`-Wanalyzer-double-fclose` |gol|
:option:`-Wanalyzer-double-free` |gol|
:option:`-Wanalyzer-exposure-through-output-file` |gol|
@@ -89,33 +88,6 @@ Options That Control Static Analysis
Default setting; overrides :option:`-Wno-analyzer-allocation-size`.
-.. option:: -Wno-analyzer-deref-before-check
-
- This warning requires :option:`-fanalyzer`, which enables it; use
- :option:`-Wno-analyzer-deref-before-check`
- to disable it.
-
- This diagnostic warns for paths through the code in which a pointer
- is checked for ``NULL`` *after* it has already been
- dereferenced, suggesting that the pointer could have been NULL.
- Such cases suggest that the check for NULL is either redundant,
- or that it needs to be moved to before the pointer is dereferenced.
-
- This diagnostic also considers values passed to a function argument
- marked with ``__attribute__((nonnull))`` as requiring a non-NULL
- value, and thus will complain if such values are checked for ``NULL``
- after returning from such a function call.
-
- This diagnostic is unlikely to be reported when any level of optimization
- is enabled, as GCC's optimization logic will typically consider such
- checks for NULL as being redundant, and optimize them away before the
- analyzer "sees" them. Hence optimization should be disabled when
- attempting to trigger this diagnostic.
-
-.. option:: -Wanalyzer-deref-before-check
-
- Default setting; overrides :option:`-Wno-analyzer-deref-before-check`.
-
.. option:: -Wno-analyzer-double-fclose
This warning requires :option:`-fanalyzer`, which enables it; use
@@ -853,7 +825,6 @@ The following options control the analyzer.
Currently, :option:`-fanalyzer-checker=taint` disables the
following warnings from :option:`-fanalyzer` :
- :option:`-Wanalyzer-deref-before-check` |gol|
:option:`-Wanalyzer-double-fclose` |gol|
:option:`-Wanalyzer-double-free` |gol|
:option:`-Wanalyzer-exposure-through-output-file` |gol|
--
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