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Test fallthrough in OSSH_CHECK_CFLAG_COMPILE. 

clang 10's -Wimplicit-fallthrough does not understand /* FALLTHROUGH */
comments and we don't use the __attribute__((fallthrough)) that it's
looking for.  This has the effect of turning off -Wimplicit-fallthrough
where it does not currently help (particularly with -Werror).  ok djm@
This commit is contained in:
Darren Tucker 2020-06-05 13:20:10 +10:00
parent 049297de97
commit 8da801f585
1 changed files with 10 additions and 0 deletions
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10
aclocal.m4 vendored
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@ -21,6 +21,16 @@ int main(int argc, char **argv) {
double m = l / 0.5;
long long int n = argc * 12345LL, o = 12345LL * (long long int)argc;
printf("%d %d %d %f %f %lld %lld\n", i, j, k, l, m, n, o);
/*
* Test fallthrough behaviour. clang 10's -Wimplicit-fallthrough does
* not understand comments and we don't use the "fallthrough" attribute
* that it's looking for.
*/
switch(i){
case 0: j += i;
/* FALLTHROUGH */
default: j += k;
}
exit(0);
}
]])],