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Q&A

Posts tagged gcc

Subtag of c

For questions related to using the GNU Compiler Collection (compiler for C, C++, Go and others).

This tag doesn't have a detailed wiki yet.

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Q&A How to write a macro that discards the const qualifier, for any type?

How to write a macro that discards the const qualifier, for any type? I hope some combination of typeof and a cast will do, but haven't found the combination. I tried this, without luck: #define...

2 answers  ·  posted 8mo ago by alx‭  ·  last activity 3mo ago by alx‭

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Q&A Assert that some code is not present in the final binary, at compile or link time.

I'd like to assert that some code can be optimized out, and is not present in the final binary object. #define CONSTANT 0 #if (!CONSTANT) [[landmine_A]] #endif static int foo(void); void...

1 answer  ·  posted 7mo ago by alx‭  ·  last activity 7mo ago by alx‭

37%
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Q&A Why does this code that uses a pointer-to-pointer-to-int segfault?

Hello folks, can someone resolve this seg fault with me please, i can't find the error where it occur. Thank you. #include &lt;stdlib.h&gt; #include &lt;stdio.h&gt; int ft_ultimate_range(int *...

1 answer  ·  posted 1y ago by M3dc0d‭  ·  last activity 1y ago by Lundin‭

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Q&A Warn of implicit cast in a function's arguments with GCC?

In the C program below, I make a mistake and call the function with (ld, ld) instead of (d, ld). #include &lt;stdio.h&gt; #include &lt;limits.h&gt; void print_int_long(int n, long l){ pri...

2 answers  ·  posted 2y ago by Quasímodo‭  ·  last activity 2y ago by Lundin‭

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Q&A Generate SIGSEGV without undefined behaviour.

In order to test that coredumps are generated and that they contain useful information which can be retreived with gdb I need to generate a SIGSEGV. Or anything else which causes a coredump. The co...

1 answer  ·  posted 2y ago by Estela‭  ·  last activity 2y ago by Lundin‭

Question c++ linux gcc