Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/pta-escape-1.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* { dg-do run } */ /* { dg-options "-O -fdump-tree-alias-details -fdelete-null-pointer-checks" } */ int *i; void __attribute__((noinline)) foo (void) { *i = 1; } int __attribute__((noinline)) bar(int local_p) { int x = 0; int *j; int **p; if (local_p) p = &j; else p = &i; *p = &x; /* This makes x escape. */ foo (); return x; } extern void abort (void); int main() { int k = 2; i = &k; if (bar (1) != 0 || k != 1) abort (); if (bar (0) != 1) abort (); return 0; } /* { dg-final { scan-tree-dump "ESCAPED = { NULL ESCAPED NONLOCAL x }" "alias" { target { ! keeps_null_pointer_checks } } } } */ /* { dg-final { scan-tree-dump "ESCAPED = { ESCAPED NONLOCAL x }" "alias" { target { keeps_null_pointer_checks } } } } */