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Questions - c99

C Function to return a String resulting in corrupted top size

I am trying to write a program that calls upon an [external library (?)] (I'm not sure that I'm using the right terminology here) that I am also writing to clean up a provided string. For example, if ...
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ジャプダウン

string

malloc

return-value

c99

memory-corruption

Votes: 0

Answers: 1

Latest Answer

The bug is this line: char * returnVal = malloc(sizeof(input)); The reason it is a bug is that it requests an allocation large enough space to store a pointer, meaning 8 bytes in a 64-bit program. W...
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Tim Boddy

Why is sprintf with a %llu returning the letters "lu"?

uint64_t milliSeconds =getTimeMs64(); int timestringLength = 0; timestringLength = snprintf( pBuffer, bufferSize, "%llu", milliSeconds ); Um, I'm more than confused. About to walk the disa...
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mint branch conditioner

string

gcc

printf

c99

stm32cubeide

Votes: 0

Answers: 1

Latest Answer

As I figured, it was something easy. In STM32CubeIDE, there is a compiler flag that defines runtime library specifications, STM or CDT calls this option Runtime Library. If it's set to Reduced C (--sp...
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mint branch conditioner

How to do closest guess on C99, C11 or C17?

I have a source code of C-project that has more than 600 c-files in it and it compiles for ARM mcu using GCC toolchain. I wonder how can I make a closest guess about which of the C standard this c-pro...
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Marina

c

gcc

c99

c11

c17

Votes: 0

Answers: 0

Atomic load, compare, modify, write - in C99 on ARM

I'm writing some embedded code, that can be interrupted by an external event (IRQ). Basically, what I need to do, is load a variable, compare it, load it, modify and store. However, if such interrupt ...
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PineLel

c

arm

atomic

c99

Votes: 0

Answers: 0

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