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add mrb_strlen_lit which makes _lit macros safer

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strlen(3) + string literal is usually optimized but strlen(3) doesn't
check if its argument is really a string literal. This is important for
mruby's _static functions to which some _lit macros are expanded (string
literals have static storage). See comment for some additional info.

remove unnecessary parentheses
This commit is contained in:
cremno
2014-03-12 17:35:06 +01:00
parent f85e5a80dc
commit e4afd5374f
3 changed files with 12 additions and 4 deletions
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include/mruby/error.h
+1 -1
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@@ -13,7 +13,7 @@ extern "C" {
void mrb_sys_fail(mrb_state *mrb, const char *mesg);
mrb_value mrb_exc_new_str(mrb_state *mrb, struct RClass* c, mrb_value str);
#define mrb_exc_new_str_lit(mrb, c, lit) mrb_exc_new_str(mrb, c, mrb_str_new_lit(mrb, (lit)))
#define mrb_exc_new_str_lit(mrb, c, lit) mrb_exc_new_str(mrb, c, mrb_str_new_lit(mrb, lit))
mrb_value mrb_make_exception(mrb_state *mrb, int argc, mrb_value *argv);
mrb_value mrb_format(mrb_state *mrb, const char *format, ...);
void mrb_exc_print(mrb_state *mrb, struct RObject *exc);