C Cookbook

• git/banned.h
  • 不推荐用这些接口
  • 因为容易有歧义，经常踩坑
  • 看提交历史有原因说明

banned	alt	reason
ctime_r, asctime_r	strftime,strbuf_addftime	reentrant, but no check the buffer is long enough
gmtime,localtime,ctime,asctime		return pointers to shared storage, not thread-safe
sprintf,vsprintf	strbuf,xstrfmt,xsnprintf	buffer overflow
strcpy,strcat,	strbuf,xstrfmt,xsnprintf	越界
strncpy	strlcpy,strbuf,xstrfmt,xsnprintf	NUL terminator
strncat		quadratic behavior

定义宏移除方法

#define	assert(x) (void)0