Gsoap gives me warnings related to -Wsign-conversion, since gsoap source files are auto generated i am unable to resolve these warnings. Can someone please me with this. Thanks in advance.
64bit Warnings example
warning: conversion to long unsigned int from int may change the sign of the result [-Wsign-conversion]
char *a = (char*)soap_malloc((soap), (n = (n < 0 ? 1 : n)) * sizeof(char));
32bit warnings example
warning: conversion to unsigned int from int may change the sign of the result [-Wsign-conversion]
char *a = (char*)soap_malloc((soap), (n = (n < 0 ? 1 : n)) * sizeof(char));
I went through their document but not much help in that regarding above warnings.
Ignore the warning. It's generated code, you cannot change it.
However, you can easily see that it is a false positive: The test n = (n < 0 ? 1 : n) specifically guarantees that the number is positive before the conversion; all negative numbers become 1.
There is no danger here in converting a signed 32 or 64 bit int to its unsigned equivalent when the signed value is guaranteed to be positive.