mirror of
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79214530e0
If more than 20 errors occur on the same source line, the compiler will immediately bail out.
459 lines
14 KiB
C
459 lines
14 KiB
C
/*****************************************************************************/
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/* */
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/* error.c */
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/* */
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/* Error handling for the cc65 C compiler */
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/* */
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/* */
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/* */
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/* (C) 1998-2011, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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/* common */
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#include "coll.h"
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#include "print.h"
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#include "strbuf.h"
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/* cc65 */
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#include "global.h"
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#include "input.h"
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#include "lineinfo.h"
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#include "scanner.h"
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#include "stmt.h"
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#include "error.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Count of errors/warnings */
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unsigned ErrorCount = 0;
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unsigned WarningCount = 0;
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unsigned RecentLineNo = 0;
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unsigned RecentErrorCount = 0;
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/* Warning and error options */
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IntStack WarnEnable = INTSTACK(1); /* Enable warnings */
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IntStack WarningsAreErrors = INTSTACK(0); /* Treat warnings as errors */
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/* Warn about: */
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IntStack WarnConstComparison= INTSTACK(1); /* - constant comparison results */
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IntStack WarnNoEffect = INTSTACK(1); /* - statements without an effect */
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IntStack WarnPointerSign = INTSTACK(1); /* - pointer conversion to pointer differing in signedness */
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IntStack WarnPointerTypes = INTSTACK(1); /* - pointer conversion to incompatible pointer type */
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IntStack WarnRemapZero = INTSTACK(1); /* - remapping character code zero */
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IntStack WarnReturnType = INTSTACK(1); /* - control reaches end of non-void function */
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IntStack WarnStructParam = INTSTACK(0); /* - structs passed by val */
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IntStack WarnUnknownPragma = INTSTACK(1); /* - unknown #pragmas */
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IntStack WarnUnreachableCode= INTSTACK(1); /* - unreachable code */
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IntStack WarnUnusedLabel = INTSTACK(1); /* - unused labels */
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IntStack WarnUnusedParam = INTSTACK(1); /* - unused parameters */
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IntStack WarnUnusedVar = INTSTACK(1); /* - unused variables */
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IntStack WarnUnusedFunc = INTSTACK(1); /* - unused functions */
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IntStack WarnConstOverflow = INTSTACK(0); /* - overflow conversion of numerical constants */
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/* Map the name of a warning to the intstack that holds its state */
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typedef struct WarnMapEntry WarnMapEntry;
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struct WarnMapEntry {
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IntStack* Stack;
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const char* Name;
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};
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static WarnMapEntry WarnMap[] = {
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/* Keep names sorted, even if it isn't used for now */
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{ &WarnConstComparison, "const-comparison" },
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{ &WarningsAreErrors, "error" },
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{ &WarnNoEffect, "no-effect" },
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{ &WarnPointerSign, "pointer-sign" },
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{ &WarnPointerTypes, "pointer-types" },
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{ &WarnRemapZero, "remap-zero" },
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{ &WarnReturnType, "return-type" },
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{ &WarnStructParam, "struct-param" },
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{ &WarnUnknownPragma, "unknown-pragma" },
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{ &WarnUnreachableCode, "unreachable-code" },
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{ &WarnUnusedFunc, "unused-func" },
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{ &WarnUnusedLabel, "unused-label" },
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{ &WarnUnusedParam, "unused-param" },
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{ &WarnUnusedVar, "unused-var" },
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{ &WarnConstOverflow, "const-overflow" },
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};
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Collection DiagnosticStrBufs;
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/*****************************************************************************/
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/* Helpers */
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/*****************************************************************************/
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static const char* GetDiagnosticFileName (void)
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/* Get the source file name where the diagnostic info refers to */
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{
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if (CurTok.LI) {
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return GetInputName (CurTok.LI);
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} else {
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return GetCurrentFilename ();
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}
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}
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static unsigned GetDiagnosticLineNum (void)
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/* Get the source line number where the diagnostic info refers to */
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{
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if (CurTok.LI) {
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return GetInputLine (CurTok.LI);
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} else {
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return GetCurrentLineNum ();
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}
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}
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/*****************************************************************************/
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/* Handling of fatal errors */
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/*****************************************************************************/
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void Fatal (const char* Format, ...)
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/* Print a message about a fatal error and die */
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{
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va_list ap;
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fprintf (stderr, "%s:%u: Fatal: ", GetDiagnosticFileName (), GetDiagnosticLineNum ());
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va_start (ap, Format);
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vfprintf (stderr, Format, ap);
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va_end (ap);
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fprintf (stderr, "\n");
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if (Line) {
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Print (stderr, 1, "Input: %.*s\n", (int) SB_GetLen (Line), SB_GetConstBuf (Line));
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}
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exit (EXIT_FAILURE);
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}
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void Internal (const char* Format, ...)
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/* Print a message about an internal compiler error and die */
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{
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va_list ap;
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fprintf (stderr, "%s:%u: Internal compiler error:\n",
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GetDiagnosticFileName (), GetDiagnosticLineNum ());
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va_start (ap, Format);
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vfprintf (stderr, Format, ap);
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va_end (ap);
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fprintf (stderr, "\n");
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if (Line) {
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fprintf (stderr, "\nInput: %.*s\n", (int) SB_GetLen (Line), SB_GetConstBuf (Line));
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}
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/* Use abort to create a core dump */
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abort ();
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}
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/*****************************************************************************/
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/* Handling of errors */
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/*****************************************************************************/
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static void IntError (const char* Filename, unsigned LineNo, const char* Msg, va_list ap)
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/* Print an error message - internal function */
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{
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fprintf (stderr, "%s:%u: Error: ", Filename, LineNo);
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vfprintf (stderr, Msg, ap);
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fprintf (stderr, "\n");
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if (Line) {
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Print (stderr, 1, "Input: %.*s\n", (int) SB_GetLen (Line), SB_GetConstBuf (Line));
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}
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++ErrorCount;
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if (RecentLineNo != LineNo) {
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RecentLineNo = LineNo;
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RecentErrorCount = 0;
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} else {
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++RecentErrorCount;
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}
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if (RecentErrorCount > 20 || ErrorCount > 200) {
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Fatal ("Too many errors");
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}
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}
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void Error (const char* Format, ...)
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/* Print an error message */
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{
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va_list ap;
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va_start (ap, Format);
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IntError (GetDiagnosticFileName (), GetDiagnosticLineNum (), Format, ap);
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va_end (ap);
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}
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void LIError (const LineInfo* LI, const char* Format, ...)
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/* Print an error message with the line info given explicitly */
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{
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va_list ap;
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va_start (ap, Format);
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IntError (GetInputName (LI), GetInputLine (LI), Format, ap);
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va_end (ap);
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}
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void PPError (const char* Format, ...)
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/* Print an error message. For use within the preprocessor */
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{
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va_list ap;
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va_start (ap, Format);
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IntError (GetCurrentFilename(), GetCurrentLineNum(), Format, ap);
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va_end (ap);
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}
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/*****************************************************************************/
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/* Handling of warnings */
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/*****************************************************************************/
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static void IntWarning (const char* Filename, unsigned LineNo, const char* Msg, va_list ap)
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/* Print a warning message - internal function */
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{
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if (IS_Get (&WarningsAreErrors)) {
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/* Treat the warning as an error */
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IntError (Filename, LineNo, Msg, ap);
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} else if (IS_Get (&WarnEnable)) {
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fprintf (stderr, "%s:%u: Warning: ", Filename, LineNo);
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vfprintf (stderr, Msg, ap);
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fprintf (stderr, "\n");
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if (Line) {
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Print (stderr, 1, "Input: %.*s\n", (int) SB_GetLen (Line), SB_GetConstBuf (Line));
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}
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++WarningCount;
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}
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}
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void Warning (const char* Format, ...)
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/* Print a warning message */
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{
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va_list ap;
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va_start (ap, Format);
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IntWarning (GetDiagnosticFileName (), GetDiagnosticLineNum (), Format, ap);
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va_end (ap);
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}
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void LIWarning (const LineInfo* LI, const char* Format, ...)
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/* Print a warning message with the line info given explicitly */
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{
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va_list ap;
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va_start (ap, Format);
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IntWarning (GetInputName (LI), GetInputLine (LI), Format, ap);
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va_end (ap);
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}
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void PPWarning (const char* Format, ...)
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/* Print a warning message. For use within the preprocessor */
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{
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va_list ap;
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va_start (ap, Format);
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IntWarning (GetCurrentFilename(), GetCurrentLineNum(), Format, ap);
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va_end (ap);
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}
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IntStack* FindWarning (const char* Name)
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/* Search for a warning in the WarnMap table and return a pointer to the
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** intstack that holds its state. Return NULL if there is no such warning.
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*/
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{
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unsigned I;
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/* For now, do a linear search */
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for (I = 0; I < sizeof(WarnMap) / sizeof (WarnMap[0]); ++I) {
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if (strcmp (WarnMap[I].Name, Name) == 0) {
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return WarnMap[I].Stack;
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}
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}
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return 0;
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}
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void ListWarnings (FILE* F)
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/* Print a list of warning types/names to the given file */
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{
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unsigned I;
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for (I = 0; I < sizeof(WarnMap) / sizeof (WarnMap[0]); ++I) {
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fprintf (F, "%s\n", WarnMap[I].Name);
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}
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}
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/*****************************************************************************/
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/* Handling of other infos */
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/*****************************************************************************/
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static void IntNote (const char* Filename, unsigned LineNo, const char* Msg, va_list ap)
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/* Print a note message - internal function */
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{
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fprintf (stderr, "%s:%u: Note: ", Filename, LineNo);
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vfprintf (stderr, Msg, ap);
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fprintf (stderr, "\n");
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}
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void Note (const char* Format, ...)
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/* Print a note message */
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{
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va_list ap;
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va_start (ap, Format);
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IntNote (GetDiagnosticFileName (), GetDiagnosticLineNum (), Format, ap);
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va_end (ap);
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}
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void LINote (const LineInfo* LI, const char* Format, ...)
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/* Print a note message with the line info given explicitly */
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{
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va_list ap;
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va_start (ap, Format);
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IntNote (GetInputName (LI), GetInputLine (LI), Format, ap);
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va_end (ap);
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}
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void PPNote (const char* Format, ...)
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/* Print a note message. For use within the preprocessor */
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{
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va_list ap;
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va_start (ap, Format);
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IntNote (GetCurrentFilename(), GetCurrentLineNum(), Format, ap);
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va_end (ap);
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}
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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void ErrorReport (void)
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/* Report errors (called at end of compile) */
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{
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unsigned int V = (ErrorCount != 0 ? 0 : 1);
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Print (stdout, V, "%u errors and %u warnings generated.\n", ErrorCount, WarningCount);
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}
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/*****************************************************************************/
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/* Tracked StrBufs */
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/*****************************************************************************/
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void InitDiagnosticStrBufs (void)
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/* Init tracking string buffers used for diagnostics */
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{
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InitCollection (&DiagnosticStrBufs);
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}
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void DoneDiagnosticStrBufs (void)
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/* Done with tracked string buffers used for diagnostics */
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{
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ClearDiagnosticStrBufs ();
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DoneCollection (&DiagnosticStrBufs);
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}
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void ClearDiagnosticStrBufs (void)
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/* Free all tracked string buffers */
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{
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unsigned I;
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for (I = 0; I < CollCount (&DiagnosticStrBufs); ++I) {
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SB_Done (CollAtUnchecked (&DiagnosticStrBufs, I));
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}
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CollDeleteAll (&DiagnosticStrBufs);
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}
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struct StrBuf* NewDiagnosticStrBuf (void)
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/* Get a new tracked string buffer */
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{
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StrBuf *Buf = NewStrBuf ();
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CollAppend (&DiagnosticStrBufs, Buf);
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return Buf;
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}
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