STM32CubeIde Version: 1.17.0
Build: 23558_20241125_2245 (UTC)
To show this bug, project “bug31_STMCubeIde” has been generated from a well tested .ioc file.
Printf() is re-directed to UART3 enabling messages on serial STLink interface.
A “UserCode” directory, with “UserInclude.h” and “testInclude1.h” files, is added to file system, to include dir and code source.
testInclude1.h defines MY_DEFINE1 as true (1)
UserInclude.h has some conditional include :
/* testInclude1.h exist and is in include list - condition is true */
#if __has_include("testInclude1.h")
/* include will be executed and is shown correctly */
#include "testInclude1.h"
#endif /* __has_include */
/* testInclude2.h doen not exist in include list - condition is false */
#if __has_include("testInclude2.h")
/* include will not be executed and is shown correctly */
#include "testInclude2.h"
#endif /* __has_include */
that work as expected.
Than has some conditional define that show not as expected:
/* MY_DEFINE1 is defined as 1 in testInclude1.h - condition is true */
#if MY_DEFINE1
/* ERROR - MSG1 should look as executable define as previous condition was true */
#define MSG1 printf("testInclude1.h was included as expected\n");
#else /* MY_DEFINE1 */
/* ERROR - MSG1 should look as non executable define as previous condition was true */
#define MSG1 printf("testInclude1.h was NOT included as expected\n");
#endif /* MY_DEFINE1 */
MSG1 and MSG2 added to UART3 init code to double check that __has include is properly handled by compiler.
On terminal we have:
testInclude1.h was included as expected\n
testInclude1.h was NOT included as expected\n
If we move to main.c and look at MSG1 we see a wrong value; also if we ask to go to declaration, we get to wrong place.
This is a huge problem with large configurable projects as it leads to a waste of time by developers team; a fast solution would be very useful.
