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1//===-- diagnostic.cpp - tool for testing libLLVM and llvm-c API ----------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements the --test-diagnostic-handler command in llvm-c-test.10//11// This command uses the C API to read a module with a custom diagnostic12// handler set to test the diagnostic handler functionality.13//14//===----------------------------------------------------------------------===//15 16#include "llvm-c-test.h"17#include "llvm-c/BitReader.h"18#include "llvm-c/Core.h"19 20#include <stdio.h>21 22static void diagnosticHandler(LLVMDiagnosticInfoRef DI, void *C) {23 fprintf(stderr, "Executing diagnostic handler\n");24 25 fprintf(stderr, "Diagnostic severity is of type ");26 switch (LLVMGetDiagInfoSeverity(DI)) {27 case LLVMDSError:28 fprintf(stderr, "error");29 break;30 case LLVMDSWarning:31 fprintf(stderr, "warning");32 break;33 case LLVMDSRemark:34 fprintf(stderr, "remark");35 break;36 case LLVMDSNote:37 fprintf(stderr, "note");38 break;39 }40 fprintf(stderr, "\n");41 42 (*(int *)C) = 1;43}44 45static int handlerCalled = 0;46 47int llvm_test_diagnostic_handler(void) {48 LLVMContextRef C = LLVMGetGlobalContext();49 LLVMContextSetDiagnosticHandler(C, diagnosticHandler, &handlerCalled);50 51 if (LLVMContextGetDiagnosticHandler(C) != diagnosticHandler) {52 fprintf(stderr, "LLVMContext{Set,Get}DiagnosticHandler failed\n");53 return 1;54 }55 56 int *DC = (int *)LLVMContextGetDiagnosticContext(C);57 if (DC != &handlerCalled || *DC) {58 fprintf(stderr, "LLVMContextGetDiagnosticContext failed\n");59 return 1;60 }61 62 LLVMMemoryBufferRef MB;63 char *msg = NULL;64 if (LLVMCreateMemoryBufferWithSTDIN(&MB, &msg)) {65 fprintf(stderr, "Error reading file: %s\n", msg);66 LLVMDisposeMessage(msg);67 return 1;68 }69 70 71 LLVMModuleRef M;72 int Ret = LLVMGetBitcodeModule2(MB, &M);73 if (Ret)74 LLVMDisposeMemoryBuffer(MB);75 76 if (handlerCalled) {77 fprintf(stderr, "Diagnostic handler was called while loading module\n");78 } else {79 fprintf(stderr, "Diagnostic handler was not called while loading module\n");80 }81 82 return 0;83}84