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Diffstat (limited to 'gdb/doc/gdb.texinfo')
| -rw-r--r-- | gdb/doc/gdb.texinfo | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index efd6dff..b0dc3bf 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -35771,12 +35771,13 @@ 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. +Enable the GCC undefined behavior sanitizer. This is disabled by +default, but passing @code{--enable-ubsan=yes} or +@code{--enable-ubsan=auto} to @code{configure} will enable it. 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 |