Posts

A guide to understanding and using the -fsigned-char and -funsigned-char GCC options to control the signedness of plain char.

The nonnull attribute specifies that some function parameters should be non-null pointers. This allows the compiler to check at compile-time if a null pointer is passed to these arguments.

Exploring why NULL and 0 are not equivalent in GNU C through pre-processor results and memory analysis.

The cleanup attribute runs a function when a variable goes out of scope. This attribute can only be applied to auto function scope variables.

Explore the -Wformat option in GCC to detect format string errors and security vulnerabilities at compile time.

Explore the internal process and usage of gcc attributes: constructor (pre-main execution) and destructor (post-main execution).