vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
//===- MarkLive.cpp -------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "COFFLinkerContext.h"
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#include "Chunks.h"
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#include "Symbols.h"
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#include "lld/Common/Timer.h"
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#include "llvm/Support/TimeProfiler.h"
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namespace lld::coff {
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// Set live bit on for each reachable chunk. Unmarked (unreachable)
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// COMDAT chunks will be ignored by Writer, so they will be excluded
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// from the final output.
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void markLive(COFFLinkerContext &ctx) {
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llvm::TimeTraceScope timeScope("Mark live");
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ScopedTimer t(ctx.gcTimer);
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// We build up a worklist of sections which have been marked as live. We only
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// push into the worklist when we discover an unmarked section, and we mark
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// as we push, so sections never appear twice in the list.
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SmallVector<SectionChunk *, 256> worklist;
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// COMDAT section chunks are dead by default. Add non-COMDAT chunks. Do not
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// traverse DWARF sections. They are live, but they should not keep other
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// sections alive.
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for (Chunk *c : ctx.driver.getChunks())
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if (auto *sc = dyn_cast<SectionChunk>(c))
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if (sc->live && !sc->isDWARF())
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worklist.push_back(sc);
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auto enqueue = [&](SectionChunk *c) {
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if (c->live)
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return;
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c->live = true;
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worklist.push_back(c);
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};
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std::function<void(Symbol *)> addSym;
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auto addImportFile = [&](ImportFile *file) {
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file->live = true;
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if (file->impchkThunk && file->impchkThunk->exitThunk)
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addSym(file->impchkThunk->exitThunk);
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};
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addSym = [&](Symbol *b) {
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if (auto *sym = dyn_cast<DefinedRegular>(b)) {
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enqueue(sym->getChunk());
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} else if (auto *sym = dyn_cast<DefinedImportData>(b)) {
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addImportFile(sym->file);
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} else if (auto *sym = dyn_cast<DefinedImportThunk>(b)) {
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addImportFile(sym->wrappedSym->file);
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sym->getChunk()->live = true;
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}
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};
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// Add GC root chunks.
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for (Symbol *b : ctx.config.gcroot)
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addSym(b);
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while (!worklist.empty()) {
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SectionChunk *sc = worklist.pop_back_val();
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assert(sc->live && "We mark as live when pushing onto the worklist!");
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// Mark all symbols listed in the relocation table for this section.
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for (Symbol *b : sc->symbols())
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if (b)
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addSym(b);
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// Mark associative sections if any.
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for (SectionChunk &c : sc->children())
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enqueue(&c);
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// Mark EC entry thunks.
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if (Defined *entryThunk = sc->getEntryThunk())
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addSym(entryThunk);
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}
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}
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}
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