diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/fold-const-call.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/builtins-folding-gimple-ub.c | 4 |
4 files changed, 17 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ba76566..1b74bd2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2016-11-02 Martin Liska <mliska@suse.cz> + + * fold-const-call.c (host_size_t_cst_p): Test whether + t is convertible to size_t. + 2016-11-02 Kyrylo Tkachov <kyrylo.tkachov@arm.com> PR tree-optimization/78170 diff --git a/gcc/fold-const-call.c b/gcc/fold-const-call.c index 05a15f9..1b3a755 100644 --- a/gcc/fold-const-call.c +++ b/gcc/fold-const-call.c @@ -29,6 +29,7 @@ along with GCC; see the file COPYING3. If not see #include "case-cfn-macros.h" #include "tm.h" /* For C[LT]Z_DEFINED_AT_ZERO. */ #include "builtins.h" +#include "gimple-expr.h" /* Functions that test for certain constant types, abstracting away the decision about whether to check for overflow. */ @@ -57,7 +58,8 @@ complex_cst_p (tree t) static inline bool host_size_t_cst_p (tree t, size_t *size_out) { - if (integer_cst_p (t) + if (types_compatible_p (size_type_node, TREE_TYPE (t)) + && integer_cst_p (t) && wi::min_precision (t, UNSIGNED) <= sizeof (size_t) * CHAR_BIT) { *size_out = tree_to_uhwi (t); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index c06c315..38668b7 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-11-02 Martin Liska <mliska@suse.cz> + + * gcc.dg/tree-ssa/builtins-folding-gimple-ub.c (main): Add + test case. + 2016-11-02 Kyrylo Tkachov <kyrylo.tkachov@arm.com> PR tree-optimization/78170 diff --git a/gcc/testsuite/gcc.dg/tree-ssa/builtins-folding-gimple-ub.c b/gcc/testsuite/gcc.dg/tree-ssa/builtins-folding-gimple-ub.c index df0ede2..e1658d1 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/builtins-folding-gimple-ub.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/builtins-folding-gimple-ub.c @@ -17,6 +17,10 @@ main (void) if (__builtin_memchr (foo1, 'x', 1000)) /* Not folded away. */ __builtin_abort (); + /* STRNCMP. */ + if (strncmp ("a", "b", -1)) /* { dg-warning "implicit declaration of function" } */ + __builtin_abort (); + return 0; } |