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Factor out shared backtrace code (#1793)

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This commit is contained in:
Rangi
2025-08-12 17:56:54 -04:00
committed by GitHub
parent 50d0b101c3
commit 9c3ce69180
14 changed files with 118 additions and 173 deletions
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53
src/link/fstack.cpp
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@@ -3,7 +3,7 @@
#include <inttypes.h>
#include <utility>
#include "style.hpp"
#include "backtrace.hpp"
#include "link/warning.hpp"
@@ -30,51 +30,10 @@ std::vector<std::pair<std::string, uint32_t>> FileStackNode::backtrace(uint32_t
}
}
static void printNode(std::pair<std::string, uint32_t> const &node) {
style_Set(stderr, STYLE_CYAN, true);
fputs(node.first.c_str(), stderr);
style_Set(stderr, STYLE_CYAN, false);
fprintf(stderr, "(%" PRIu32 ")", node.second);
}
void FileStackNode::printBacktrace(uint32_t curLineNo) const {
std::vector<std::pair<std::string, uint32_t>> nodes = backtrace(curLineNo);
size_t n = nodes.size();
if (warnings.traceDepth == TRACE_COLLAPSE) {
fputs(" ", stderr); // Just three spaces; the fourth will be handled by the loop
for (size_t i = 0; i < n; ++i) {
style_Reset(stderr);
fprintf(stderr, " %s ", i == 0 ? "at" : "<-");
printNode(nodes[n - i - 1]);
}
putc('\n', stderr);
} else if (warnings.traceDepth == 0 || static_cast<size_t>(warnings.traceDepth) >= n) {
for (size_t i = 0; i < n; ++i) {
style_Reset(stderr);
fprintf(stderr, " %s ", i == 0 ? "at" : "<-");
printNode(nodes[n - i - 1]);
putc('\n', stderr);
}
} else {
size_t last = warnings.traceDepth / 2;
size_t first = warnings.traceDepth - last;
size_t skipped = n - warnings.traceDepth;
for (size_t i = 0; i < first; ++i) {
style_Reset(stderr);
fprintf(stderr, " %s ", i == 0 ? "at" : "<-");
printNode(nodes[n - i - 1]);
putc('\n', stderr);
}
style_Reset(stderr);
fprintf(stderr, " ...%zu more%s\n", skipped, last ? "..." : "");
for (size_t i = n - last; i < n; ++i) {
style_Reset(stderr);
fputs(" <- ", stderr);
printNode(nodes[n - i - 1]);
putc('\n', stderr);
}
}
style_Reset(stderr);
trace_PrintBacktrace(
backtrace(curLineNo),
[](std::pair<std::string, uint32_t> const &node) { return node.first.c_str(); },
[](std::pair<std::string, uint32_t> const &node) { return node.second; }
);
}