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f42ff2b219
It is currently very fragile, due to:
* Differing versions of compilers/DWARF version result in a variety
of breakages in the our code which analyzes the DWARF info;
* With musl, libunwind seems to be currently unable to traverse
beyond signal handlers, due to the DWARF information not
being present in the signal frame.
See <https://maskray.me/blog/2022-04-10-unwinding-through-signal-handler>.
Note that I have not verified that the problem in the blog
post above is indeed what we're hitting, but it seems plausible.
34 lines
1.0 KiB
C++
34 lines
1.0 KiB
C++
#include "Common.hpp"
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <string.h>
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#include <unistd.h>
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// Throwing in static initialization is nasty, and there is no useful stacktrace
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// Also use direct syscalls to write the error as iostream might not be initialized
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// https://bugs.llvm.org/show_bug.cgi?id=28954
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void dieWithError(const char *err) {
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size_t remaining = strlen(err);
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while (remaining) {
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size_t s = write(STDERR_FILENO, err, remaining);
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if (s == -1) {
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if (errno == EINTR) {
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continue;
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} else {
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_exit(1); // Can't write remaining error but nothing else can be done..
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}
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}
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remaining -= s;
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err += s;
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}
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size_t _ = write(STDERR_FILENO, "\n", 1);
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_exit(1);
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}
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std::ostream& operator<<(std::ostream& out, struct sockaddr_in& addr) {
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char buf[INET_ADDRSTRLEN];
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inet_ntop(AF_INET, &addr.sin_addr, buf, sizeof(buf));
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out << buf << ":" << ntohs(addr.sin_port);
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return out;
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} |