On Tue, Oct 07, 2014 at 09:37:48AM +0200, Mathieu Malaterre wrote: > Hi, > > I am starring at bug #758572. Basically OP reports that `cmake` is > underlinked, which is a serious issue as per policy. However when > reading the details it appears that this is a c++ weak symbol (AFAIK > no weak default definition is available). This weak symbol is > generated by default by gcc when using part of the STL (See > #758572#13). > > So I would be tempted to simply close the bug as invalid, since weak > symbol without default definition should not be an issue. However OP > reports that it makes `cmake` fails using a custom `libcurl`. > > Could someone please remind me in which case weak symbols (no weak > default definition) can trigger an undefined behavior at runtime ? I think UB is only triggered if something attempts to use the symbol. Is cmake pulling in another library that uses libpthread but doesn't link it in? -- Kind regards, Loong Jin
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