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Diffstat (limited to 'gcc/tree-ssa-structalias.c')
| -rw-r--r-- | gcc/tree-ssa-structalias.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c index 3db2874..5138e72 100644 --- a/gcc/tree-ssa-structalias.c +++ b/gcc/tree-ssa-structalias.c @@ -3482,7 +3482,7 @@ handle_rhs_call (gimple stmt, VEC(ce_s, heap) **results) the LHS point to global and escaped variables. */ static void -handle_lhs_call (tree lhs, int flags, VEC(ce_s, heap) *rhsc) +handle_lhs_call (tree lhs, int flags, VEC(ce_s, heap) *rhsc, tree fndecl) { VEC(ce_s, heap) *lhsc = NULL; @@ -3496,6 +3496,12 @@ handle_lhs_call (tree lhs, int flags, VEC(ce_s, heap) *rhsc) it escapes. */ DECL_EXTERNAL (vi->decl) = 0; vi->is_global_var = 0; + /* If this is not a real malloc call assume the memory was + initialized and thus may point to global memory. All + builtin functions with the malloc attribute behave in a sane way. */ + if (!fndecl + || DECL_BUILT_IN_CLASS (fndecl) != BUILT_IN_NORMAL) + make_constraint_from (vi, nonlocal_id); } else if (VEC_length (ce_s, rhsc) > 0) { @@ -3798,7 +3804,7 @@ find_func_aliases (gimple origt) handle_rhs_call (t, &rhsc); if (gimple_call_lhs (t) && could_have_pointers (gimple_call_lhs (t))) - handle_lhs_call (gimple_call_lhs (t), flags, rhsc); + handle_lhs_call (gimple_call_lhs (t), flags, rhsc, fndecl); VEC_free (ce_s, heap, rhsc); } else |