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authorSiddhesh Poyarekar <siddhesh@sourceware.org>2021-07-07 07:02:13 +0530
committerSiddhesh Poyarekar <siddhesh@sourceware.org>2021-07-07 07:02:13 +0530
commit83e55c982ffcf42185254cff5ac16377672ae32e (patch)
tree6cf8b6e9fb75d0522a48fbf6dc016796eb348ea0 /manual
parent7042b53f11339bc286270cd1a48eebf7989d198b (diff)
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glibc.malloc.check: Fix nit in documentation
The tunable will not work with *any* non-zero tunable value since its
list of allowed values is 0-3.  Fix the documentation to reflect that.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'manual')
-rw-r--r--manual/memory.texi10
-rw-r--r--manual/tunables.texi2
2 files changed, 6 insertions, 6 deletions
diff --git a/manual/memory.texi b/manual/memory.texi
index 28ec2e4e63..31ee36be8c 100644
--- a/manual/memory.texi
+++ b/manual/memory.texi
@@ -1364,11 +1364,11 @@ The block was already freed.
 Another possibility to check for and guard against bugs in the use of
 @code{malloc}, @code{realloc} and @code{free} is to set the environment
 variable @code{MALLOC_CHECK_}.  When @code{MALLOC_CHECK_} is set to a
-non-zero value, a special (less efficient) implementation is used which
-is designed to be tolerant against simple errors, such as double calls
-of @code{free} with the same argument, or overruns of a single byte
-(off-by-one bugs).  Not all such errors can be protected against,
-however, and memory leaks can result.
+non-zero value less than 4, a special (less efficient) implementation is
+used which is designed to be tolerant against simple errors, such as
+double calls of @code{free} with the same argument, or overruns of a
+single byte (off-by-one bugs).  Not all such errors can be protected
+against, however, and memory leaks can result.
 
 Any detected heap corruption results in immediate termination of the
 process.
diff --git a/manual/tunables.texi b/manual/tunables.texi
index d5d957fb5b..ebdb562e36 100644
--- a/manual/tunables.texi
+++ b/manual/tunables.texi
@@ -115,7 +115,7 @@ following tunables in the @code{malloc} namespace:
 This tunable supersedes the @env{MALLOC_CHECK_} environment variable and is
 identical in features.
 
-Setting this tunable to a non-zero value enables a special (less
+Setting this tunable to a non-zero value less than 4 enables a special (less
 efficient) memory allocator for the @code{malloc} family of functions that is
 designed to be tolerant against simple errors such as double calls of
 free with the same argument, or overruns of a single byte (off-by-one