From 484b5de0562da134ad66c0d75fff2220f1448f50 Mon Sep 17 00:00:00 2001
From: Sandra Loosemore <sandra@codesourcery.com>
Date: Sat, 3 Jan 2015 18:44:25 -0500
Subject: [PATCH] invoke.texi ([-fsemantic-interposition]): Fix typos and tidy
grammar.
2015-01-03 Sandra Loosemore <sandra@codesourcery.com>
gcc/
* doc/invoke.texi ([-fsemantic-interposition]): Fix typos and
tidy grammar.
From-SVN: r219166
---
gcc/ChangeLog | 5 +++++
gcc/doc/invoke.texi | 20 +++++++++++---------
2 files changed, 16 insertions(+), 9 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ca4956477c9a..b5c5936b5e91 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-01-03 Sandra Loosemore <sandra@codesourcery.com>
+
+ * doc/invoke.texi ([-fsemantic-interposition]): Fix typos and
+ tidy grammar.
+
2015-01-03 Sandra Loosemore <sandra@codesourcery.com>
* doc/invoke.texi ([-fplan9-extensions]): Add/fix @opindex.
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 8b3c195dc65f..434790d24582 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -8070,19 +8070,21 @@ This option has no effect unless @option{-fsel-sched-pipelining} is turned on.
@item -fsemantic-interposition
@opindex fsemantic-interposition
-Some object formats, like ELF, allow interposing of symbols by dynamic linker.
-This means that for symbols exported from the DSO compiler can not perform
-inter-procedural propagation, inlining and other optimizations in anticipation
+Some object formats, like ELF, allow interposing of symbols by the
+dynamic linker.
+This means that for symbols exported from the DSO, the compiler cannot perform
+interprocedural propagation, inlining and other optimizations in anticipation
that the function or variable in question may change. While this feature is
useful, for example, to rewrite memory allocation functions by a debugging
implementation, it is expensive in the terms of code quality.
-With @option{-fno-semantic-inteposition} compiler assumest that if interposition
-happens for functions the overwritting function will have
-precisely same semantics (and side effects). Similarly if interposition happens
+With @option{-fno-semantic-interposition} the compiler assumes that
+if interposition happens for functions the overwriting function will have
+precisely the same semantics (and side effects).
+Similarly if interposition happens
for variables, the constructor of the variable will be the same. The flag
-has no effect for functions explicitly declared inline, where
-interposition changing semantic is never allowed and for symbols explicitly
-declared weak.
+has no effect for functions explicitly declared inline
+(where it is never allowed for interposition to change semantics)
+and for symbols explicitly declared weak.
@item -fshrink-wrap
@opindex fshrink-wrap
--
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