Make gcov docs more precise (PR gcov-profile/89959).

2019-04-10  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/89959
	* doc/gcov.texi: Make documentation of -x option
	more precise.

From-SVN: r270251

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7dd43051607298a629d5ebc3e76a9d7973bda299..522538c5d54551bd8294d78c290c060372c39bcc 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-04-10  Martin Liska  <mliska@suse.cz>
+
+       PR gcov-profile/89959
+       * doc/gcov.texi: Make documentation of -x option
+       more precise.
+
 2019-04-10  Richard Biener  <rguenther@suse.de>
 
        * tree-vectorizer.h (_stmt_vec_info): Remove same_dr_stmt

diff --git a/gcc/doc/gcov.texi b/gcc/doc/gcov.texi
index e086c3084f93428aabe6ca131e502c5324fbb48c..dcdd7831ff063483d43e5347af0b67083c85ecc4 100644 (file)
--- a/gcc/doc/gcov.texi
+++ b/gcc/doc/gcov.texi
@@ -431,13 +431,15 @@ Print verbose informations related to basic blocks and arcs.
 
 @item -x
 @itemx --hash-filenames
-By default, gcov uses the full pathname of the source files to create
+When using @var{--preserve-paths},
+gcov uses the full pathname of the source files to create
 an output filename.  This can lead to long filenames that can overflow
 filesystem limits.  This option creates names of the form
 @file{@var{source-file}##@var{md5}.gcov},
 where the @var{source-file} component is the final filename part and
 the @var{md5} component is calculated from the full mangled name that
-would have been used otherwise.
+would have been used otherwise.  The option is an alternative
+to the @var{--preserve-paths} on systems which have a filesystem limit.
 
 @end table