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61365bd067
Co-authored-by: rafidwayne <117944293+rafidwayne@users.noreply.github.com> Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
66 lines
3.2 KiB
C++
66 lines
3.2 KiB
C++
// report::detail::GuestName (runtime/report/symbol_names.h): which symbol
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// names are recompiled functions, and the sub_<address> each is shown as in
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// crash and hang reports. Header only. From the repo root:
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// clang++ -std=c++20 -O2 -Iruntime tests/symbol_names_test.cpp -o build/symbol_names_test
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// build/symbol_names_test
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// - The ELF and Mach-O names (Linux's .symtab, macOS's dladdr) give what
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// they gave before the Windows forms were added, byte for byte (the body's
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// name past "__imp__" whatever follows it, as a compiler's .cold split).
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// - The PDB's names as DbgHelp gives them on Windows (the ThinkPad, 92306bf:
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// "_imp__sub_825987E0", "weak.?sub_82441190YAXAEIAUPPCContextPEAEZ.default
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// .__xmm", a hook's "sub_82441190") are recompiled functions too.
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// - Nothing else is: runtime functions, near misses (7 or 9 digits,
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// lowercase hex), names that merely contain "sub_".
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#include <report/symbol_names.h>
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#include <cstdio>
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#include <cstring>
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static int g_failures = 0;
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#define CHECK(cond, ...) do { if (!(cond)) { g_failures++; printf(" FAIL %s:%d: %s: ", __FILE__, __LINE__, #cond); printf(__VA_ARGS__); printf("\n"); } } while (0)
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static void Expect(const char* name, const char* want)
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{
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char buffer[13];
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memset(buffer, 'x', sizeof(buffer));
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const char* got = report::detail::GuestName(name, buffer);
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if (!want)
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CHECK(got == nullptr, "%s -> %s, expected not a recompiled function", name, got ? got : "(null)");
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else
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CHECK(got && strcmp(got, want) == 0, "%s -> %s, expected %s", name, got ? got : "(null)", want);
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}
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int main()
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{
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printf("1. ELF and Mach-O names, as before\n");
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Expect("__imp__sub_825987E0", "sub_825987E0");
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Expect("__imp__sub_825987E0.cold", "sub_825987E0.cold"); // as before: everything past __imp__
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Expect("_Z12sub_82441190R10PPCContextPh", "sub_82441190");
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Expect("_Z12sub_82441190R10PPCContextS_", nullptr); // another signature: not one
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Expect("_ZN6report9TestCrashEv", nullptr);
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Expect("main", nullptr);
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printf("2. A PDB's names through DbgHelp (Windows)\n");
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Expect("_imp__sub_825987E0", "sub_825987E0"); // a body's public symbol
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Expect("sub_82441190", "sub_82441190"); // a hook, or a wrapper's public symbol undecorated
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Expect("?sub_82441190@@YAXAEIAUPPCContext@@PEAE@Z", "sub_82441190"); // decorated
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Expect("weak.?sub_82441190YAXAEIAUPPCContextPEAEZ.default.__xmm", "sub_82441190"); // lld-link's weak alias
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Expect(".weak.?sub_82441190@@YAXAEIAUPPCContext@@PEAE@Z.default.__xmm@00000000000000500000000000000090", "sub_82441190");
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printf("3. Not recompiled functions\n");
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Expect("report::TestCrash", nullptr);
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Expect("report::`anonymous namespace'::Watchdog", nullptr);
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Expect("sub_8244119", nullptr); // 7 digits
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Expect("sub_824411900", nullptr); // 9
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Expect("sub_82441l90", nullptr); // not hex
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Expect("sub_825987e0", nullptr); // XenonRecomp's are uppercase
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Expect("_imp__sub_8259", nullptr);
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Expect("?sub_8244@@YAXXZ", nullptr);
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Expect("RtlUserThreadStart", nullptr);
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Expect("my_sub_82441190", nullptr);
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Expect("", nullptr);
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printf(g_failures ? "%d failure(s)\n" : "all passed\n", g_failures);
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return g_failures ? 1 : 0;
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}
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