mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 03:27:39 +00:00
c9152b6f14
This change switches c++ exception handling from sjlj to standard dwarf. It's needed because clang for aarch64 doesn't support sjlj. It turns out that libunwind had a bare-metal configuration that made this easy to do. This change gets the new experimental cosmocc -mclang flag in a state of working so well that it can now be used to build all of llamafile and it goes 3x faster in terms of build latency, without trading away any perf. The int_fast16_t and int_fast32_t types are now always defined as 32-bit in the interest of having more abi consistency between cosmocc -mgcc and -mclang mode.
74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
/*-*-mode:c++;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8-*-│
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│ vi: set et ft=cpp ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2024 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/mem/alg.h"
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#include "libc/mem/leaks.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/runtime.h"
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struct Resource {
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char *p;
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Resource() {
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p = new char;
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}
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~Resource() {
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delete p;
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}
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};
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void Poke(char *p) {
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*p = 1;
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}
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void (*pPoke)(char *) = Poke;
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void Throw(void) {
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throw 42;
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}
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void (*pThrow)(void) = Throw;
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int cmp(const void *x, const void *y) {
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Resource r;
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pPoke(r.p);
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if (*r.p)
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pThrow();
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exit(5);
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}
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int A[3] = {3, 2, 1};
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int Work(void) {
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Resource r;
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pPoke(r.p);
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qsort(A, 3, sizeof(int), cmp);
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return A[0];
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}
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int (*pWork)(void) = Work;
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int main(int argc, char *argv[]) {
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try {
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Resource r;
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if (pWork() != 1)
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return 1;
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pPoke(r.p);
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if (r.p)
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return 2;
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} catch (int e) {
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if (e != 42)
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return 3;
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}
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CheckForMemoryLeaks();
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}
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