cppcheck/test/cfg/gnu.c

// Test library configuration for gnu.cfg
//
// Usage:
// $ cppcheck --check-library --library=gnu --enable=information --enable=style --error-exitcode=1 --suppress=missingIncludeSystem --inline-suppr test/cfg/gnu.c
// =>
// No warnings about bad library configuration, unmatched suppressions, etc. exitcode=0
//

#include <string.h>

void bufferAccessOutOfBounds()
{
    char buf[2];
    // This is valid
    sethostname(buf, 2);
    // cppcheck-suppress bufferAccessOutOfBounds
    sethostname(buf, 4);
}

void leakReturnValNotUsed()
{
    // cppcheck-suppress unreadVariable
    char* ptr = (char*)strdupa("test");
    // cppcheck-suppress ignoredReturnValue
    strdupa("test");
    // cppcheck-suppress unreadVariable
    char* ptr2 = (char*)strndupa("test", 1);
    // cppcheck-suppress ignoredReturnValue
    strndupa("test", 1);
    // cppcheck-suppress ignoredReturnValue
    // cppcheck-suppress nullPointer
    strcasestr("test", NULL);

    // cppcheck-suppress knownConditionTrueFalse
    // cppcheck-suppress duplicateExpression
    if (42 == __builtin_expect(42, 0))
        return;
}