GCC 10.3: Wformat-overflow #17
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Some quick grepping leads to Which leads to: I guess we cannot just change LINELENGTH because it affects how AMRDATA behaves. (see |
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Jup, it's basically writing a string added to a prefix in a same-size string a couple of time. I would say we trash the C pointer logic and make it C++? :) |
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Yes, there are quite some C strings and sprintf's that should be replaced with C++ strings. |
Spotted buffer overflows in `sprintf` with GCC 10.3
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Fix string buffer overflows in two files.
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@WeiqunZhang can you please take a look at AMReX-Codes/amrex#2660 ? :) |
| @@ -431,14 +432,16 @@ void Dataset::DatasetRender(const Box &alignedRegion, AmrPicture *apptr, | |||
| XmStringFree(sNewLevel); | |||
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| sprintf(minInfoV, fstring, rMin); | |||
| sprintf(minInfo, "Min:%s", minInfoV); | |||
| XmString sNewMin = XmStringCreateSimple(minInfo); | |||
| std::string minInfo("Min:"); | |||
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I did not change this for compatibility, but we could add a space here:
| std::string minInfo("Min:"); | |
| std::string minInfo("Min: "); |
| XtVaSetValues(wMinValue, XmNlabelString, sNewMin, NULL); | ||
| XmStringFree(sNewMin); | ||
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| sprintf(maxInfoV, fstring, rMax); | ||
| sprintf(maxInfo, "Max:%s", maxInfoV); | ||
| XmString sNewMax = XmStringCreateSimple(maxInfo); | ||
| std::string maxInfo("Max:"); |
There was a problem hiding this comment.
I did not change this for compatibility, but we could add a space here:
| std::string maxInfo("Max:"); | |
| std::string maxInfo("Max: "); |
Spotted buffer overflows in
sprintfwith GCC 10.3.X-ref: ignores AMReX-Codes/amrex#2750 for now (can be a separate PR)