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| author | Damien Miller <djm@mindrot.org> | 2023-12-22 07:56:26 +0100 |
|---|---|---|
| committer | Damien Miller <djm@mindrot.org> | 2023-12-22 07:56:26 +0100 |
| commit | 1036d77b34a5fa15e56f516b81b9928006848cbd (patch) | |
| tree | c2bccdc8c4a6eb3eb16bec6f3449f61b704bf85f /m4 | |
| parent | crank versions (diff) | |
| download | openssh-1036d77b34a5fa15e56f516b81b9928006848cbd.tar.xz openssh-1036d77b34a5fa15e56f516b81b9928006848cbd.zip | |
better detection of broken -fzero-call-used-regs
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
Diffstat (limited to 'm4')
| -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 5d4c56280..033df501c 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 |