topic error: expression .... ->CCM_Type::ROOT[0].CCM_Type::<unnamed struct>::TARGET_ROOT' has side-effects kCLOCK_RootM4_1 = (uint32_t)(&((CCM_Type*) ... ->ROOT[0].TARGET_ROOT), in i.MX Processors

error: expression .... ->CCM_Type::ROOT[0].CCM_Type::::TARGET_ROOT' has side-effects kCLOCK_RootM4_1 = (uint32_t)(&((CCM_Type*) ... ->ROOT[0].TARGET_ROOT),

tom_orsi1 — Tue, 03 Sep 2019 13:44:15 GMT

The solution to this problem is to use the offsetof, review this single line in the fsl_clock.h that needs propagated for both enums that use the CCM macro and all their entries.

/*! @brief ccm root name used to get clock frequency. */
typedef enum _clock_root_control
{
kCLOCK_RootM4 = (uint32_t)CCM_BASE+offsetof(CCM_Type,ROOT[1].TARGET_ROOT), /*!< ARM Cortex-M4 Clock control name.*/

Re: error: expression .... ->CCM_Type::ROOT[0].CCM_Type::::TARGET_ROOT' has side-effects kCLOCK_RootM4_1 = (uint32_t)(&((CCM_Type*) ... ->ROOT[0].TARGET_ROOT),

anton_glukhov — Mon, 25 May 2020 21:11:02 GMT

Hello Thomas,

Do you know if this suggestion will be incorporated into SDK? I also have the same problem while I'm compiling with c++ compiler.

I'm compiling with g++ version 8.3 and offsetof doesn't solve the issue. Does it work it for you?

Best regards,

Anton

Re: error: expression .... ->CCM_Type::ROOT[0].CCM_Type::::TARGET_ROOT' has side-effects kCLOCK_RootM4_1 = (uint32_t)(&((CCM_Type*) ... ->ROOT[0].TARGET_ROOT),

tom_orsi — Mon, 25 May 2020 23:10:56 GMT

Can you paste the error messages into this thread? offsetof is definitely a solution and if its recognized by your compiler it should solve your problem.

Re: error: expression .... ->CCM_Type::ROOT[0].CCM_Type::::TARGET_ROOT' has side-effects kCLOCK_RootM4_1 = (uint32_t)(&((CCM_Type*) ... ->ROOT[0].TARGET_ROOT),

anton_glukhov — Fri, 05 Jun 2020 08:02:43 GMT

Hello Tom,

Sorry for the delay. Everything is fine, it was an error because of cmake cache. It works now. Thank you!

But it's interesting if there is a plan to include it into SDK.

Best regards,

Anton