Source: gcc-7
Version: 7-20170407-1
Severity: normal
$ gcc-7 -Wextra -o foo foo.c
foo.c: In function 'main':
foo.c:6:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
argc = 0;
~~~~~^~~~
foo.c:9:3: note: here
default:
^~~~~~~
$ cat foo.c
int main(int argc, char **argv)
{
switch (argc)
{
case 1: {
argc = 0;
//fallthrough
}
default:
argc = 1;
break;
}
return 0;
}
Removing the braces for "case 1:" removes the warning.
-- System Information:
Debian Release: 9.0
APT prefers unstable-debug
APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1,
'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.9.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
