Initialization of a global array to { 0 } does not cause subsequent elements to be zero

Stian Soevik

When initializing a global array as follows:

uint32_t test[32] = { 0 };

I would expect all elements to be initialized to 0. However, only the first one becomes 0. Is this a bug, or a misunderstanding from my side?

over 12 years ago

0 andreas von kaenel over 12 years ago

Genius 4925 points

Hi Stian

See this post, that should answer your question

Best regards

Andreas

0 Stian Soevik over 12 years ago in reply to andreas von kaenel

Expert 1295 points

Thank you, but it does not give me a solution for C. According to K&R C, "the trailing members are initialized with 0" for a brace-enclosed list of initializers for an array. Is this a bug?

0 andreas von kaenel over 12 years ago in reply to Stian Soevik

Genius 4925 points

Yes this is a limitiation with C2000 CGT. See this wiki article

Best regards

Andreas

0 Stian Soevik over 12 years ago in reply to andreas von kaenel

Expert 1295 points

I thought I fixed the problem with the following entry in my linker file:

.ebss               : FILL = 0x00 > RAML1       PAGE = 1

However, I recently discovered that some global structs were not zero-initialized (even though they were assigned { 0 }). Where did I miss?

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Initialization of a global array to { 0 } does not cause subsequent elements to be zero