diff options
Diffstat (limited to 'gcc/builtins.cc')
| -rw-r--r-- | gcc/builtins.cc | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gcc/builtins.cc b/gcc/builtins.cc index 8bb9126..468bd65 100644 --- a/gcc/builtins.cc +++ b/gcc/builtins.cc @@ -9574,14 +9574,16 @@ fold_builtin_frexp (location_t loc, tree arg0, tree arg1, tree rettype) switch (value->cl) { case rvc_zero: + case rvc_nan: + case rvc_inf: /* For +-0, return (*exp = 0, +-0). */ + /* For +-NaN or +-Inf, *exp is unspecified, but something should + be stored there so that it isn't read from uninitialized object. + As glibc and newlib store *exp = 0 for +-Inf/NaN, storing + 0 here as well is easiest. */ exp = integer_zero_node; frac = arg0; break; - case rvc_nan: - case rvc_inf: - /* For +-NaN or +-Inf, *exp is unspecified, return arg0. */ - return omit_one_operand_loc (loc, rettype, arg0, arg1); case rvc_normal: { /* Since the frexp function always expects base 2, and in |