Rainer reports uint64_t clashes, so avoid it. Tested on x86_64-unknown-linux-gnu, applied.
Richard. 2017-07-25 Richard Biener <rguent...@suse.de> PR tree-optimization/81410 * gcc.dg/vect/pr81410.c: Do not typedef uint64_t. Index: gcc/testsuite/gcc.dg/vect/pr81410.c =================================================================== --- gcc/testsuite/gcc.dg/vect/pr81410.c (revision 250505) +++ gcc/testsuite/gcc.dg/vect/pr81410.c (working copy) @@ -3,10 +3,9 @@ #include "tree-vect.h" -typedef long long uint64_t; -uint64_t x[24]; -uint64_t y[16]; -uint64_t z[8]; +long long x[24]; +long long y[16]; +long long z[8]; void __attribute__((noinline)) foo() {