As we all know and love (or hate), GCC has the capability of issuing warnings when you attempt to use the printf() family of functions with mismatched type specifications. In our code, we have a number of utility functions of…
In C struct, why packed,aligned seems to do padding? I have to read a bunch of MSB/LSB bytes from a remote device using i2c. As all device data are bytes, I use uint8_t which represent exactly 8 bits that is…
I'm building an executable which needs to link to some legacy shared objects to not only use the version of symbols exported by those, but also ensure that the sections of .gnu.version_r section as is properly populated well. In short,…
I'm using the libsndfile library for a signal processing project. I'm compiling c code using gcc on a WSL Ubuntu shell. I installed libsndfile-dev using sudo apt-get install libsndfile1-dev, as well as built the cloned libsndfile repository following its instructions…
I am using pipes to display file contents. When I comment the wait command (in the last part of the parent process), I expect to see the parent process in the ps command's output (after a while, because reading is…
For purely educational purposes, I am trying to write examples with the "Constructing Function Calls builtins" (https://gcc.gnu.org/onlinedocs/gcc-13.2.0/gcc/Constructing-Calls.html#index-_005f_005fbuiltin_005fva_005farg_005fpack) I have written an example that incorporates what appears in the documentation: #include <stdio.h> extern int myprintf(FILE *f, const char *format, ...); extern…
For the following code, I hope there is a warning because a is type enum A, but the case B1 and B2 are type enum B; but I couldn't find a way to make gcc/clang warn about it. Any suggestion…
# First test **I want to succeed this way** SCREENSHOT BELOW In folder Source file main.c In folder Source file controller.c In folder Headers file controler.h In folder .vscode file c_cpp_properties.json In folder .vscode file launch.json #include <stdlib.h> #include <stdio.h>…
I want to compile my c programs on Ubuntu 22.04.3 LTS running on WSL-2. Try as I might, I keep getting the following error: > myFile1.c:1:10: fatal error: stdio.h: No such file or directory > 1 | #include <stdio.h> >…
I want to know how is the bit order of an int32_t is stored in memory, so I write some code to print. #include <stdio.h> #include <stdint.h> #include <assert.h> void print_i8_as_bits(int8_t num) { #pragma pack(1) struct Byte { unsigned bit_0:…