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| author | Tom Tromey <tom@tromey.com> | 2018-08-18 15:32:46 -0600 |
|---|---|---|
| committer | Tom Tromey <tom@tromey.com> | 2018-10-03 15:19:06 -0600 |
| commit | f35d5adea1cee8ce9141ad85a7e59d008c2e4d42 (patch) | |
| tree | 88cb5d24575333e1977ac5aab23466d476992288 /gdb/doc | |
| parent | 1dffa580e7e083a43216fd7cbcadd72c760cf29d (diff) | |
| download | gdb-f35d5adea1cee8ce9141ad85a7e59d008c2e4d42.zip gdb-f35d5adea1cee8ce9141ad85a7e59d008c2e4d42.tar.gz gdb-f35d5adea1cee8ce9141ad85a7e59d008c2e4d42.tar.bz2 | |
Add --enable-ubsan
This adds --enable-ubsan to gdb's configure. By default it is enabled
in development mode, and disabled otherwise. This passes both
-fsanitize=undefined and -fno-sanitize-recover=undefined to
compilations, so that undefined behavior violations will be sure to
cause test failures.
gdb/ChangeLog
2018-10-03 Tom Tromey <tom@tromey.com>
* README: Mention --enable-ubsan.
* NEWS: Mention --enable-ubsan.
* acinclude.m4: Include sanitize.m4.
* configure: Rebuild.
* configure.ac: Call AM_GDB_UBSAN.
* sanitize.m4: New file.
gdb/doc/ChangeLog
2018-10-03 Tom Tromey <tom@tromey.com>
* gdb.texinfo (Configure Options): Document --enable-ubsan.
Diffstat (limited to 'gdb/doc')
| -rw-r--r-- | gdb/doc/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/doc/gdb.texinfo | 8 |
2 files changed, 12 insertions, 0 deletions
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index c26b8e6..99aefc2 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,7 @@ +2018-10-03 Tom Tromey <tom@tromey.com> + + * gdb.texinfo (Configure Options): Document --enable-ubsan. + 2018-10-02 John Darrington <john@darrington.wattle.id.au> * gdb.texinfo (Remote Connection Commands): Describe diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index d37c9e4..5653bdc 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -35763,6 +35763,14 @@ compiler you are using. Treat compiler warnings as werrors. It adds the @code{-Werror} flag to the compiler, which will fail the compilation if the compiler outputs any warning messages. + +@item --enable-ubsan +Enable the GCC undefined behavior sanitizer. By default this is +disabled in @value{GDBN} releases, but enabled, when available, when +building from git. The undefined behavior sanitizer checks for +C@t{++} undefined behavior. It has a performance cost, so if you are +looking at @value{GDBN}'s performance, you should disable it. The +undefined behavior sanitizer was first introduced in GCC 4.9. @end table @node System-wide configuration |