<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Feb 21, 2012, at 12:23 PM, Joerg Sonnenberger <<a href="mailto:joerg@britannica.bec.de">joerg@britannica.bec.de</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><blockquote type="cite" style="font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><blockquote type="cite">Do we really silently accept them? Until very recently (a month ago?), we<br>emitted:<br><br>t.c:4:12: warning: length modifier 'L' results in undefined behavior or no<br> <span class="Apple-converted-space"> </span>effect with 'i' conversion specifier [-Wformat]<br> <span class="Apple-converted-space"> </span>printf("%Li", (long long) 2);<br> <span class="Apple-converted-space"> </span>~^~<br>1 warning generated.<br><br><br>Now I see that TOT doesn't warn here. Is this accepted somewhere? I see no<br>test cases in clang/test that shows we should accept this. Was this an<br>intentional change, or a regression?<br></blockquote><br>r148859 made them accepted about a month ago. Looks intentional to me :)<br></blockquote><br style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; display: inline !important; float: none; ">Which brings up the question, where is that documented? At least the</span><br style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; display: inline !important; float: none; ">Linux documentation is silent on this being valid.</span><br style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "></div></blockquote></div><div><br></div><div>According to PR 9466, this is a general GNU extension:</div><div><br></div><div><a href="http://www.gnu.org/software/libc/manual/html_node/Integer-Conversions.html">http://www.gnu.org/software/libc/manual/html_node/Integer-Conversions.html</a></div><div><br></div></body></html>