https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69759
Bug ID: 69759
Summary: __builtin_alloca undocumented
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
Documentation for the __builtin_alloca intrinsic function appears to be missing
from the manual:
$ find /src/gcc/trunk/gcc/doc -type f | xargs grep builtin_alloca | wc -l
0
The builtin is relied on by GCC itself (e.g., libstdc++) as well as other
projects (e.g., GLIBC), and is even mentioned on the Linux alloca() man page:
http://man7.org/linux/man-pages/man3/alloca.3.html