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* [Bug c/44949] extend Wparentheses from & to &= [not found] <bug-44949-4@http.gcc.gnu.org/bugzilla/> @ 2011-08-06 20:50 ` marc.glisse at normalesup dot org 2023-07-20 17:02 ` gsmecher at threespeedlogic dot com 1 sibling, 0 replies; 2+ messages in thread From: marc.glisse at normalesup dot org @ 2011-08-06 20:50 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44949 --- Comment #1 from Marc Glisse <marc.glisse at normalesup dot org> 2011-08-06 20:49:40 UTC --- Created attachment 24935 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24935 hack It is an easy enough hack to call the Wparentheses code for &= and others (the warning says "&" instead of "&=", it isn't a clean patch) so I can test on real code. And it seems painful. It warns on code like: a |= b & c; where it is quite clear we could never intend (a|=b)&c;. Restricting the warning to the case where the result of the expression is used should improve things, except that I don't know how to access that information... ^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c/44949] extend Wparentheses from & to &= [not found] <bug-44949-4@http.gcc.gnu.org/bugzilla/> 2011-08-06 20:50 ` [Bug c/44949] extend Wparentheses from & to &= marc.glisse at normalesup dot org @ 2023-07-20 17:02 ` gsmecher at threespeedlogic dot com 1 sibling, 0 replies; 2+ messages in thread From: gsmecher at threespeedlogic dot com @ 2023-07-20 17:02 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44949 Graeme Smecher <gsmecher at threespeedlogic dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |gsmecher at threespeedlogic dot co | |m --- Comment #3 from Graeme Smecher <gsmecher at threespeedlogic dot com> --- Another instance of this bug in the wild, and some encouragement to fix it: if(a /= b) {} // whoops - no warning, but highly suspicious The "/=" corresponds to the inequality operators in several other languages (at least: ADA, VHDL, Erlang, Fortran). It's a fairly easy typo to make when switching between them and can be hard to spot when under-caffeinated. ^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <bug-44949-4@http.gcc.gnu.org/bugzilla/>
2011-08-06 20:50 ` [Bug c/44949] extend Wparentheses from & to &= marc.glisse at normalesup dot org
2023-07-20 17:02 ` gsmecher at threespeedlogic dot com
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