c++ - Why my source code coverage result looks so wierd -


i'm trying find out coverage of source code gcov. , follow part of result:

     328                 :          8 : char* getnumber() {  329 [ +  - ][ +  - ]:          8 :     log(__file__, __line__, class_name, "enter getaccountnumber", "");      [ +  - ][ +  - ]      [ +  - ][ +  - ]      [ +  - ][ +  - ]              [ +  - ]  330 [ +  - ][ +  - ]:          8 :     log(__file__, __line__, class_name, "leave getaccountnumber", "");      [ +  - ][ +  - ]      [ +  - ][ +  - ]      [ +  - ][ +  - ]              [ +  - ]  331         [ +  - ]:          8 :     return this->number.c_str();  332                 :            : }

i did'n use option -coverage, , default, coverage option enable. wonder why branch data looks wierd. gcov document said:

               ’ + ’: branch taken @ least once                ’ - ’: branch not taken                ’ # ’: basic block containing branch never executed

so why there 4 +/- in every line, , in line there no "line".


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