diff options
Diffstat (limited to 'libcpp/macro.c')
| -rw-r--r-- | libcpp/macro.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libcpp/macro.c b/libcpp/macro.c index 556628b..ff6685c 100644 --- a/libcpp/macro.c +++ b/libcpp/macro.c @@ -1795,6 +1795,16 @@ replace_args (cpp_reader *pfile, cpp_hashnode *node, cpp_macro *macro, NODE_NAME (node), src->val.macro_arg.arg_no); } + else if (CPP_OPTION (pfile, cpp_warn_c90_c99_compat) + && ! macro->syshdr + && ! cpp_in_system_header (pfile) + && ! CPP_OPTION (pfile, cplusplus)) + cpp_error (pfile, CPP_DL_WARNING, + "invoking macro %s argument %d: " + "empty macro arguments are undefined" + " in ISO C90", + NODE_NAME (node), + src->val.macro_arg.arg_no); /* Avoid paste on RHS (even case count == 0). */ if (!pfile->state.in_directive && !(src->flags & PASTE_LEFT)) @@ -2848,6 +2858,10 @@ parse_params (cpp_reader *pfile, cpp_macro *macro) (pfile, CPP_W_VARIADIC_MACROS, "anonymous variadic macros were introduced in C99"); } + else if (CPP_OPTION (pfile, cpp_warn_c90_c99_compat) + && ! CPP_OPTION (pfile, cplusplus)) + cpp_error (pfile, CPP_DL_WARNING, + "anonymous variadic macros were introduced in C99"); } else if (CPP_OPTION (pfile, cpp_pedantic) && CPP_OPTION (pfile, warn_variadic_macros)) |