Hariharan Sandanagobalane <hariharans@xxxxxxxxxxxx> writes: > I have a feeling the website is wrong. If you went to > http://gcc.gnu.org/onlinedocs/gcc/Vector-Extensions.html, it claims > > "In C vectors can be subscripted as if the vector were an array with > the same number of elements and base type. Out of bound accesses > invoke undefined behavior at runtime. Warnings for out of bound > accesses for vector subscription can be enabled with -Warray-bounds. " > > I went through the gcc source code and the extend.texi does not have > this statement anymore. Why is that not reflected on the website? I see that statement in the current source code. I expect that you are looking at an older release. Vector subscripting was added quite recently and is not yet in any gcc release. When you read http://gcc.gnu.org/onlinedocs/gcc/ you are reading the docs for the current development release. If you look at http://gcc.gnu.org/onlinedocs/ you can select the documentation appropriate to the release you are using. If you started from that page, you are selecting the manual which follows a note "Some information may not be applicable to any existing release." Ian
