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-rw-r--r--include/ruby/ruby.h12
1 files changed, 10 insertions, 2 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index 10c220d3a2..7e8532485e 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -2155,6 +2155,14 @@ int ruby_vsnprintf(char *str, size_t n, char const *fmt, va_list ap);
__builtin_choose_expr(__builtin_constant_p(fmt), \
rb_scan_args0(argc,argv,fmt,(sizeof((VALUE*[]){__VA_ARGS__})/sizeof(VALUE*)),(VALUE*[]){__VA_ARGS__}), \
rb_scan_args(argc,argvp,fmt,__VA_ARGS__))
+# if GCC_VERSION_SINCE(4, 4, 0)
+void rb_scan_args_bad_format(const char*) __attribute__((error("bad scan arg format")));
+void rb_scan_args_length_mismatch(int, int) __attribute__((error("variable argument length doesn't match")));
+# else
+# define rb_scan_args_bad_format(fmt) rb_fatal("bad scan arg format: %s", fmt)
+# define rb_scan_args_length_mismatch(vari, varc) rb_fatal("variable argument length doesn't match: %d %d", vari, varc)
+# endif
+
ALWAYS_INLINE(static int
rb_scan_args0(int argc, const VALUE *argv, const char *fmt, int varc, VALUE *vars[]));
inline int
@@ -2199,13 +2207,13 @@ rb_scan_args0(int argc, const VALUE *argv, const char *fmt, int varc, VALUE *var
p++;
}
if (*p != '\0') {
- rb_fatal("bad scan arg format: %s", fmt);
+ rb_scan_args_bad_format(fmt);
}
n_mand = n_lead + n_trail;
vari = n_mand + n_opt + f_var + f_hash + f_block;
if (vari != varc) {
- rb_fatal("variable argument length doesn't match* %d %d", vari, varc);
+ rb_scan_args_length_mismatch(vari, varc);
}
vari = 0;