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| From: | Stefan Weil |
| Subject: | Re: [Qemu-devel] [BUG] 216 Alerts reported by LGTM for QEMU (some might be release critical) |
| Date: | Sun, 14 Jul 2019 19:44:55 +0200 |
| User-agent: | Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
Am 14.07.2019 um 19:30 schrieb Peter Maydell: [...] > "Analyzer thinks this multiply can overflow > but in fact it's not possible" is quite a common false > positive cause... The analysers don't complain because a multiply can overflow. They complain because the code indicates that a larger result is expected, for example uint64_t = uint32_t * uint32_t. They would not complain for the same multiplication if it were assigned to a uint32_t. So there is a simple solution to write the code in a way which avoids false positives... Stefan
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