53 lines
1.7 KiB
Diff
53 lines
1.7 KiB
Diff
From 1036d77b34a5fa15e56f516b81b9928006848cbd Mon Sep 17 00:00:00 2001
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From: Damien Miller <djm@mindrot.org>
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Date: Fri, 22 Dec 2023 17:56:26 +1100
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Subject: [PATCH] better detection of broken -fzero-call-used-regs
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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gcc 13.2.0 on ppc64le refuses to compile some function, including
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cipher.c:compression_alg_list() with an error:
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> sorry, unimplemented: argument ‘used’ is not supportedcw
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> for ‘-fzero-call-used-regs’ on this target
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This extends the autoconf will-it-work test with a similarly-
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structured function that seems to catch this.
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Spotted/tested by Colin Watson; bz3645
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---
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m4/openssh.m4 | 12 +++++++++---
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1 file changed, 9 insertions(+), 3 deletions(-)
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--- a/m4/openssh.m4
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+++ b/m4/openssh.m4
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@@ -20,18 +20,24 @@ char *f2(char *s, ...) {
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va_end(args);
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return strdup(ret);
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}
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+const char *f3(int s) {
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+ return s ? "good" : "gooder";
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+}
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int main(int argc, char **argv) {
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- (void)argv;
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char b[256], *cp;
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+ const char *s;
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/* Some math to catch -ftrapv problems in the toolchain */
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int i = 123 * argc, j = 456 + argc, k = 789 - argc;
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float l = i * 2.1;
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double m = l / 0.5;
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long long int n = argc * 12345LL, o = 12345LL * (long long int)argc;
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+ (void)argv;
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f(1);
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- snprintf(b, sizeof b, "%d %d %d %f %f %lld %lld\n", i,j,k,l,m,n,o);
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+ s = f3(f(2));
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+ snprintf(b, sizeof b, "%d %d %d %f %f %lld %lld %s\n", i,j,k,l,m,n,o,s);
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if (write(1, b, 0) == -1) exit(0);
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- cp = f2("%d %d %d %f %f %lld %lld\n", i,j,k,l,m,n,o);
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+ cp = f2("%d %d %d %f %f %lld %lld %s\n", i,j,k,l,m,n,o,s);
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+ if (write(1, cp, 0) == -1) exit(0);
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free(cp);
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/*
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* Test fallthrough behaviour. clang 10's -Wimplicit-fallthrough does
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