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Fix compiler warnings generated when compiling with -Wall flag. #44

merged 5 commits into from Dec 30, 2013

Fix compiler warnings generated when compiling with -Wall flag. #44

merged 5 commits into from Dec 30, 2013


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@ribbons ribbons commented Dec 30, 2013

These commits resolve all of the warnings which were generated when compiling the current library with the -Wall flag passed to avr-gcc. One of them also has the nice side effect of shaving 42 bytes off the compiled program size when building for the Arduino Uno.

ribbons added 5 commits Dec 30, 2013
Remove the typedef storage class specifier from the declaration of the
URLPARAM_RESULT enum as this is not required and causes gcc to emit the
warning "'typedef' was ignored in this declaration" when compiling with
Correct the order of the initializer list so that gcc doesn't emit the
warning "'WebServer::m_cmdCount' will be initialized after 'int
WebServer::m_contentLength' when initialized here" when compiling using
Add an additional set of brackets around the while loop condition in
WebServer::printP to stop gcc emitting the warning "suggest parentheses
around assignment used as truth value" when compiling using -Wall.
Convert some of the int and char variables to be unsigned int and unsigned
char types.  This prevents gcc generating the warnings "comparison between
signed and unsigned integer expressions" and "array subscript has type
'char'", as well as having a nice side-effect of shaving 42 bytes off the
compiled size when building for the Uno.
The Command prototype has a char* parameter for the URL tail, but
WebServer::dispatchCommand calls this with an empty string as a parameter
if there is no URL.  As gcc treats empty strings as const char*s this
causes a warning to be emitted when compiling using -Wall, so suppress it
by explicitly casting it to char*.
unwiredben added a commit that referenced this issue Dec 30, 2013
Fix compiler warnings generated when compiling with -Wall flag.
@unwiredben unwiredben merged commit 96ca7e6 into sirleech:master Dec 30, 2013
@ribbons ribbons deleted the compiler-warnings branch Dec 31, 2013
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2 participants