diff options
| author | Damien Miller <djm@mindrot.org> | 2023-12-22 17:56:26 +1100 |
|---|---|---|
| committer | Damien Miller <djm@mindrot.org> | 2023-12-22 18:00:59 +1100 |
| commit | 95cd4a090d5b378d75c8753e70249aadc65d858d (patch) | |
| tree | c2bccdc8c4a6eb3eb16bec6f3449f61b704bf85f | |
| parent | 8241b9c0529228b4b86d88b1a6076fb9f97e4a99 (diff) | |
better detection of broken -fzero-call-used-regsV_9_6
gcc 13.2.0 on ppc64le refuses to compile some function, including
cipher.c:compression_alg_list() with an error:
> sorry, unimplemented: argument ‘used’ is not supportedcw
> for ‘-fzero-call-used-regs’ on this target
This extends the autoconf will-it-work test with a similarly-
structured function that seems to catch this.
Spotted/tested by Colin Watson; bz3645
| -rw-r--r-- | m4/openssh.m4 | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/m4/openssh.m4 b/m4/openssh.m4 index 5d4c5628..033df501 100644 --- a/m4/openssh.m4 +++ b/m4/openssh.m4 @@ -20,18 +20,24 @@ char *f2(char *s, ...) { va_end(args); return strdup(ret); } +const char *f3(int s) { + return s ? "good" : "gooder"; +} int main(int argc, char **argv) { - (void)argv; char b[256], *cp; + const char *s; /* Some math to catch -ftrapv problems in the toolchain */ int i = 123 * argc, j = 456 + argc, k = 789 - argc; float l = i * 2.1; double m = l / 0.5; long long int n = argc * 12345LL, o = 12345LL * (long long int)argc; + (void)argv; f(1); - snprintf(b, sizeof b, "%d %d %d %f %f %lld %lld\n", i,j,k,l,m,n,o); + s = f3(f(2)); + snprintf(b, sizeof b, "%d %d %d %f %f %lld %lld %s\n", i,j,k,l,m,n,o,s); if (write(1, b, 0) == -1) exit(0); - cp = f2("%d %d %d %f %f %lld %lld\n", i,j,k,l,m,n,o); + cp = f2("%d %d %d %f %f %lld %lld %s\n", i,j,k,l,m,n,o,s); + if (write(1, cp, 0) == -1) exit(0); free(cp); /* * Test fallthrough behaviour. clang 10's -Wimplicit-fallthrough does |