Implement -Wimplicit-fallthrough.

[gcc.git] / gcc / convert.c

diff --git a/gcc/convert.c b/gcc/convert.c
index e6b4d295c4ea393f869c74ff0d15e4c845409a0e..8f18ee4d2477e88d926c2eecaed6e09e3c6f3fca 100644 (file)
--- a/gcc/convert.c
+++ b/gcc/convert.c
@@ -164,6 +164,7 @@ convert_to_real_1 (tree type, tree expr, bool fold_p)
               -fmath-errno.  */
            if (flag_errno_math)
              break;
+           gcc_fallthrough ();
          CASE_MATHFN (ACOS)
          CASE_MATHFN (ACOSH)
          CASE_MATHFN (ASIN)
@@ -184,6 +185,7 @@ convert_to_real_1 (tree type, tree expr, bool fold_p)
            /* The above functions are not safe to do this conversion.  */
            if (!flag_unsafe_math_optimizations)
              break;
+           gcc_fallthrough ();
          CASE_MATHFN (SQRT)
          CASE_MATHFN (FABS)
          CASE_MATHFN (LOGB)
@@ -516,7 +518,7 @@ convert_to_integer_1 (tree type, tree expr, bool dofold)
          /* Only convert nearbyint* if we can ignore math exceptions.  */
          if (flag_trapping_math)
            break;
-         /* ... Fall through ...  */
+         gcc_fallthrough ();
        CASE_FLT_FN (BUILT_IN_RINT):
          /* Only convert in ISO C99 mode and with -fno-math-errno.  */
          if (!targetm.libc_has_function (function_c99_misc) || flag_errno_math)