Hi
For our large 64-bit C++ project we use gcc compile options: -Wall -pedantic
We also build the project with Visual C++ and get lots of instances of
warning C4267, for example:
'initializing': conversion from 'size_t' to 'unsigned int', possible loss
of data
To get a similar warning with gcc it seems that I need -Wconversion.
However, that warning option seems very strict. For example with this code:
typedef struct
{
uint8 x : 4,
y : 4;
} myHdr;
unsigned X=1;
myHdr hdr;
hdr.x = static_cast<uint8_t>(X);
I get warning:
warning: conversion to ‘unsigned char:4’ from ‘uint8_t {aka unsigned char}’
may alter its value [-Wconversion]
I have two questions:
1) What static_cast would I use to fix the above example warning?
2) Is -Wconversion recommended or is it too fussy in practice? Is there a
better option?
Best regards
David
