{"id":688,"date":"2023-04-03T11:47:13","date_gmt":"2023-04-03T03:47:13","guid":{"rendered":"http:\/\/www.inhhh.com\/blog\/?p=688"},"modified":"2023-04-03T11:47:13","modified_gmt":"2023-04-03T03:47:13","slug":"warning-iso-c-forbids-converting-a-string-constant-to-char-wwrite-strings","status":"publish","type":"post","link":"http:\/\/www.inhhh.com\/blog\/?p=688","title":{"rendered":"warning: ISO C++ forbids converting a string constant to \u2018char*\u2019 [-Wwrite-strings]"},"content":{"rendered":"\n<p>\u5728C++\u4e2d\uff0c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>char* p = \"abc\";\u3000\u3000\/\/ valid in C, invalid in C++<\/code><\/pre>\n\n\n\n<p>\u4f1a\u8df3\u51fa\u8b66\u544a\uff1awarning: ISO C++ forbids converting a string constant to &#8216;char*&#8217; [-Wwrite-strings]<\/p>\n\n\n\n<p>\u6539\u6210\u4e0b\u9762\u4f1a\u901a\u8fc7warning<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>char* p = (char*)\"abc\";  \/\/ OK<\/code><\/pre>\n\n\n\n<p>\u6216\u8005\u6539\u6210\u4e0b\u9762<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>char const *p = \"abc\";\u3000\u3000\/\/ OK<\/code><\/pre>\n\n\n\n<p>\u539f\u56e0\u89e3\u6790\uff1a<\/p>\n\n\n\n<p>\u5b66\u4e60c\u6216\u8005c++\u7684\u65f6\u5019\u90fd\u77e5\u9053\uff0c\u5982\u679c\u5728\u8d4b\u503c\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u7b49\u53f7\u4e24\u8fb9\u7684\u53d8\u91cf\u7c7b\u578b\u4e0d\u4e00\u6837\uff0c\u90a3\u4e48\u7f16\u8bd1\u5668\u4f1a\u8fdb\u884c\u4e00\u79cd\u53eb\u505a implicit conversion \u7684\u64cd\u4f5c\u6765\u4f7f\u5f97\u53d8\u91cf\u53ef\u4ee5\u88ab\u8d4b\u503c\u3002<\/p>\n\n\n\n<p>\u5728\u4e0a\u9762\u7684\u8868\u8fbe\u5f0f\u4e2d\u7b49\u53f7\u53f3\u8fb9\u7684&#8221;abc&#8221;\u662f\u4e00\u4e2a\u4e0d\u53d8\u5e38\u91cf\uff0c\u5728c++\u4e2d\u53eb\u505astring literal\uff0ctype\u662fconst char *\uff0c\u800cp\u5219\u662f\u4e00\u4e2achar\u6307\u9488\u3002\u5982\u679c\u5f3a\u884c\u8d4b\u503c\u4f1a\u53d1\u751f\u4ec0\u4e48\u5462\uff1f\u6ca1\u9519\uff0c\u5c31\u662f\u5c06\u53f3\u8fb9\u7684\u5e38\u91cf\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u6210\u4e00\u4e2a\u6307\u9488\uff0c\u7ed3\u679c\u5c31\u662f\u6211\u4eec\u5728\u4fee\u6539\u4e00\u4e2aconst\u5e38\u91cf\u3002\u7f16\u8bd1\u8fd0\u884c\u7684\u7ed3\u679c\u4f1a\u56e0\u7f16\u8bd1\u5668\u548c\u64cd\u4f5c\u7cfb\u7edf\u5171\u540c\u51b3\u5b9a\uff0c\u6709\u7684\u7f16\u8bd1\u5668\u4f1a\u901a\u8fc7\uff0c\u6709\u7684\u4f1a\u629b\u5f02\u5e38\uff0c\u5c31\u7b97\u8fc7\u4e86\u4e5f\u53ef\u80fd\u56e0\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u7684\u654f\u611f\u6027\u800c\u88ab\u6740\u6389\u3002<\/p>\n\n\n\n<p>\u50cf\u8fd9\u79cd\u76f4\u63a5\u5c06string literal \u8d4b\u503c\u7ed9\u6307\u9488\u7684\u64cd\u4f5c\u88ab\u5f00\u53d1\u8005\u4eec\u8ba4\u4e3a\u662fdeprecated\uff0c\u53ea\u4e0d\u8fc7\u7531\u4e8e\u4ee5\u524d\u5f88\u591a\u4ee3\u7801\u90fd\u6709\u8fd9\u79cd\u4e60\u60ef\uff0c\u4e3a\u4e86\u517c\u5bb9\uff0c\u5c31\u4fdd\u7559\u4e0b\u6765\u4e86\u3002<br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728C++\u4e2d\uff0c \u4f1a\u8df3\u51fa\u8b66\u544a\uff1awarning: ISO C++ forbids converting a stri<\/p>\n<div class=\"more-link\">\n\t\t\t\t <a href=\"http:\/\/www.inhhh.com\/blog\/?p=688\" class=\"link-btn theme-btn\"><span>Read More <\/span> <i class=\"fa fa-caret-right\"><\/i><\/a>\n\t\t\t<\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-688","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.inhhh.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/688","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.inhhh.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.inhhh.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.inhhh.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.inhhh.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=688"}],"version-history":[{"count":1,"href":"http:\/\/www.inhhh.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/688\/revisions"}],"predecessor-version":[{"id":697,"href":"http:\/\/www.inhhh.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/688\/revisions\/697"}],"wp:attachment":[{"href":"http:\/\/www.inhhh.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.inhhh.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=688"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.inhhh.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}