stacktrace: add version 1.0.0

Co-authored-by: Timo Bingmann <[email protected]>

Author: AiyionPrime

recipes/stacktrace/all/conanfile.py

@@ -0,0 +1,45 @@
+from conan import ConanFile
+from conan.errors import ConanInvalidConfiguration
+from conan.tools.build import check_min_cppstd
+from conan.tools.files import copy, get
+from conan.tools.layout import basic_layout
+import os
+
+
+required_conan_version = ">=2.0"
+
+
+class PackageConan(ConanFile):
+    name = "stacktrace"
+    version = "1.0"
+    description = "Print stack backtrace programmatically with demangled function names"
+    license = "WTFPL"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://panthema.net/2008/0901-stacktrace-demangled/"
+    topics = ("stacktrace", "backtrace", "backtrace_symbols", "demangle", "header-only")
+    package_type = "header-library"
+    settings = "os", "arch", "compiler", "build_type"
+    no_copy_source = True
+
+    def export_sources(self):
+        copy(self, "stacktrace.h", self.recipe_folder, self.export_sources_folder)
+
+    def package_id(self):
+        self.info.clear()
+
+    def validate(self):
+        check_min_cppstd(self, 98)
+        if str(self.settings.compiler) not in ["gcc", "clang"]:
+            raise ConanInvalidConfiguration(f"{self.ref} does only demangle gcc and clang properly.")
+        if self.settings.os == "Windows":
+            raise ConanInvalidConfiguration(f"{self.ref} might not compile on Windows.")
+
+    def build(self):
+        pass
+
+    def package(self):
+        copy(self, "stacktrace.h", self.source_folder, os.path.join(self.package_folder, "include"))
+
+    def package_info(self):
+        self.cpp_info.bindirs = []
+        self.cpp_info.libdirs = []

recipes/stacktrace/all/stacktrace.h

@@ -0,0 +1,93 @@
+// stacktrace.h (c) 2008, Timo Bingmann from http://idlebox.net/
+// published under the WTFPL v2.0
+
+#ifndef _STACKTRACE_H_
+#define _STACKTRACE_H_
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <execinfo.h>
+#include <cxxabi.h>
+
+/** Print a demangled stack backtrace of the caller function to FILE* out. */
+static inline void print_stacktrace(FILE *out = stderr, unsigned int max_frames = 63)
+{
+    fprintf(out, "stack trace:\n");
+
+    // storage array for stack trace address data
+    void* addrlist[max_frames+1];
+
+    // retrieve current stack addresses
+    int addrlen = backtrace(addrlist, sizeof(addrlist) / sizeof(void*));
+
+    if (addrlen == 0) {
+	fprintf(out, "  <empty, possibly corrupt>\n");
+	return;
+    }
+
+    // resolve addresses into strings containing "filename(function+address)",
+    // this array must be free()-ed
+    char** symbollist = backtrace_symbols(addrlist, addrlen);
+
+    // allocate string which will be filled with the demangled function name
+    size_t funcnamesize = 256;
+    char* funcname = (char*)malloc(funcnamesize);
+
+    // iterate over the returned symbol lines. skip the first, it is the
+    // address of this function.
+    for (int i = 1; i < addrlen; i++)
+    {
+	char *begin_name = 0, *begin_offset = 0, *end_offset = 0;
+
+	// find parentheses and +address offset surrounding the mangled name:
+	// ./module(function+0x15c) [0x8048a6d]
+	for (char *p = symbollist[i]; *p; ++p)
+	{
+	    if (*p == '(')
+		begin_name = p;
+	    else if (*p == '+')
+		begin_offset = p;
+	    else if (*p == ')' && begin_offset) {
+		end_offset = p;
+		break;
+	    }
+	}
+
+	if (begin_name && begin_offset && end_offset
+	    && begin_name < begin_offset)
+	{
+	    *begin_name++ = '\0';
+	    *begin_offset++ = '\0';
+	    *end_offset = '\0';
+
+	    // mangled name is now in [begin_name, begin_offset) and caller
+	    // offset in [begin_offset, end_offset). now apply
+	    // __cxa_demangle():
+
+	    int status;
+	    char* ret = abi::__cxa_demangle(begin_name,
+					    funcname, &funcnamesize, &status);
+	    if (status == 0) {
+		funcname = ret; // use possibly realloc()-ed string
+		fprintf(out, "  %s : %s+%s\n",
+			symbollist[i], funcname, begin_offset);
+	    }
+	    else {
+		// demangling failed. Output function name as a C function with
+		// no arguments.
+		fprintf(out, "  %s : %s()+%s\n",
+			symbollist[i], begin_name, begin_offset);
+	    }
+	}
+	else
+	{
+	    // couldn't parse the line? print the whole line.
+	    fprintf(out, "  %s\n", symbollist[i]);
+	}
+    }
+
+    free(funcname);
+    free(symbollist);
+}
+
+#endif // _STACKTRACE_H_

recipes/stacktrace/all/test_package/CMakeLists.txt

@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+project(test_package LANGUAGES CXX)
+
+find_package(stacktrace REQUIRED CONFIG)
+
+add_executable(${PROJECT_NAME} test_package.cpp)
+target_link_libraries(${PROJECT_NAME} PRIVATE stacktrace::stacktrace)

recipes/stacktrace/all/test_package/conanfile.py

@@ -0,0 +1,25 @@
+from conan import ConanFile
+from conan.tools.build import can_run
+from conan.tools.cmake import cmake_layout, CMake
+import os
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "CMakeDeps", "CMakeToolchain"
+
+    def layout(self):
+        cmake_layout(self)
+
+    def requirements(self):
+        self.requires(self.tested_reference_str)
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if can_run(self):
+            bin_path = os.path.join(self.cpp.build.bindir, "test_package")
+            self.run(bin_path, env="conanrun")

recipes/stacktrace/all/test_package/test_package.cpp

@@ -0,0 +1,38 @@
+#include "stacktrace.h"
+#include <map>
+
+namespace Nu {
+
+template<typename Type>
+struct Alpha {
+    struct Beta {
+	void func() {
+	    print_stacktrace();
+	}
+	void func(Type) {
+	    print_stacktrace();
+	}
+    };
+};
+
+struct Gamma {
+    template <int N>
+    void unroll(double d) {
+	unroll<N-1>(d);
+    }
+};
+
+template<>
+void Gamma::unroll<0>(double) {
+    print_stacktrace();
+}
+
+} // namespace Nu
+
+int main(void) {
+    Nu::Alpha<int>::Beta().func(42);
+    Nu::Alpha<char*>::Beta().func("42");
+    Nu::Alpha< Nu::Alpha< std::map<int, double> > >::Beta().func();
+    Nu::Gamma().unroll<5>(42.0);
+    return EXIT_SUCCESS;
+}

recipes/stacktrace/config.yml

@@ -0,0 +1,3 @@
+versions:
+  "1.0.0":
+    folder: all