1 /*****************************************************************************/
5 /* Error handling for the cc65 C compiler */
9 /* (C) 1998-2011, Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
53 /*****************************************************************************/
55 /*****************************************************************************/
59 /* Count of errors/warnings */
60 unsigned ErrorCount = 0;
61 unsigned WarningCount = 0;
63 /* Warning and error options */
64 IntStack WarnEnable = INTSTACK(1); /* Enable warnings */
65 IntStack WarningsAreErrors = INTSTACK(0); /* Treat warnings as errors */
67 IntStack WarnConstComparison= INTSTACK(1); /* - constant comparison results */
68 IntStack WarnNoEffect = INTSTACK(1); /* - statements without an effect */
69 IntStack WarnRemapZero = INTSTACK(1); /* - remapping character code zero */
70 IntStack WarnStructParam = INTSTACK(1); /* - structs passed by val */
71 IntStack WarnUnknownPragma = INTSTACK(1); /* - unknown #pragmas */
72 IntStack WarnUnusedLabel = INTSTACK(1); /* - unused labels */
73 IntStack WarnUnusedParam = INTSTACK(1); /* - unused parameters */
74 IntStack WarnUnusedVar = INTSTACK(1); /* - unused variables */
76 /* Map the name of a warning to the intstack that holds its state */
77 typedef struct WarnMapEntry WarnMapEntry;
82 static WarnMapEntry WarnMap[] = {
83 /* Keep names sorted, even if it isn't used for now */
84 { &WarnConstComparison, "const-comparison" },
85 { &WarningsAreErrors, "error" },
86 { &WarnNoEffect, "no-effect" },
87 { &WarnRemapZero, "remap-zero" },
88 { &WarnStructParam, "struct-param" },
89 { &WarnUnknownPragma, "unknown-pragma" },
90 { &WarnUnusedLabel, "unused-label" },
91 { &WarnUnusedParam, "unused-param" },
92 { &WarnUnusedVar, "unused-var" },
97 /*****************************************************************************/
98 /* Handling of fatal errors */
99 /*****************************************************************************/
103 void Fatal (const char* Format, ...)
104 /* Print a message about a fatal error and die */
108 const char* FileName;
111 FileName = GetInputName (CurTok.LI);
112 LineNum = GetInputLine (CurTok.LI);
114 FileName = GetCurrentFile ();
115 LineNum = GetCurrentLine ();
118 fprintf (stderr, "%s(%u): Fatal: ", FileName, LineNum);
120 va_start (ap, Format);
121 vfprintf (stderr, Format, ap);
123 fprintf (stderr, "\n");
126 Print (stderr, 1, "Input: %.*s\n", (int) SB_GetLen (Line), SB_GetConstBuf (Line));
133 void Internal (const char* Format, ...)
134 /* Print a message about an internal compiler error and die. */
138 const char* FileName;
141 FileName = GetInputName (CurTok.LI);
142 LineNum = GetInputLine (CurTok.LI);
144 FileName = GetCurrentFile ();
145 LineNum = GetCurrentLine ();
148 fprintf (stderr, "%s(%u): Internal compiler error:\n",
151 va_start (ap, Format);
152 vfprintf (stderr, Format, ap);
154 fprintf (stderr, "\n");
157 fprintf (stderr, "\nInput: %.*s\n", (int) SB_GetLen (Line), SB_GetConstBuf (Line));
160 /* Use abort to create a core dump */
166 /*****************************************************************************/
167 /* Handling of errors */
168 /*****************************************************************************/
172 static void IntError (const char* Filename, unsigned LineNo, const char* Msg, va_list ap)
173 /* Print an error message - internal function*/
175 fprintf (stderr, "%s(%u): Error: ", Filename, LineNo);
176 vfprintf (stderr, Msg, ap);
177 fprintf (stderr, "\n");
180 Print (stderr, 1, "Input: %.*s\n", (int) SB_GetLen (Line), SB_GetConstBuf (Line));
183 if (ErrorCount > 10) {
184 Fatal ("Too many errors");
190 void Error (const char* Format, ...)
191 /* Print an error message */
194 va_start (ap, Format);
195 IntError (GetInputName (CurTok.LI), GetInputLine (CurTok.LI), Format, ap);
201 void LIError (const LineInfo* LI, const char* Format, ...)
202 /* Print an error message with the line info given explicitly */
205 va_start (ap, Format);
206 IntError (GetInputName (LI), GetInputLine (LI), Format, ap);
212 void PPError (const char* Format, ...)
213 /* Print an error message. For use within the preprocessor. */
216 va_start (ap, Format);
217 IntError (GetCurrentFile(), GetCurrentLine(), Format, ap);
223 /*****************************************************************************/
224 /* Handling of warnings */
225 /*****************************************************************************/
229 static void IntWarning (const char* Filename, unsigned LineNo, const char* Msg, va_list ap)
230 /* Print warning message - internal function. */
232 if (IS_Get (&WarningsAreErrors)) {
234 /* Treat the warning as an error */
235 IntError (Filename, LineNo, Msg, ap);
237 } else if (IS_Get (&WarnEnable)) {
239 fprintf (stderr, "%s(%u): Warning: ", Filename, LineNo);
240 vfprintf (stderr, Msg, ap);
241 fprintf (stderr, "\n");
244 Print (stderr, 1, "Input: %.*s\n", (int) SB_GetLen (Line), SB_GetConstBuf (Line));
253 void Warning (const char* Format, ...)
254 /* Print warning message. */
257 va_start (ap, Format);
258 IntWarning (GetInputName (CurTok.LI), GetInputLine (CurTok.LI), Format, ap);
264 void LIWarning (const LineInfo* LI, const char* Format, ...)
265 /* Print a warning message with the line info given explicitly */
268 va_start (ap, Format);
269 IntWarning (GetInputName (LI), GetInputLine (LI), Format, ap);
275 void PPWarning (const char* Format, ...)
276 /* Print warning message. For use within the preprocessor. */
279 va_start (ap, Format);
280 IntWarning (GetCurrentFile(), GetCurrentLine(), Format, ap);
286 IntStack* FindWarning (const char* Name)
287 /* Search for a warning in the WarnMap table and return a pointer to the
288 ** intstack that holds its state. Return NULL if there is no such warning.
293 /* For now, do a linear search */
294 for (I = 0; I < sizeof(WarnMap) / sizeof (WarnMap[0]); ++I) {
295 if (strcmp (WarnMap[I].Name, Name) == 0) {
296 return WarnMap[I].Stack;
304 void ListWarnings (FILE* F)
305 /* Print a list of warning types/names to the given file */
308 for (I = 0; I < sizeof(WarnMap) / sizeof (WarnMap[0]); ++I) {
309 fprintf (F, "%s\n", WarnMap[I].Name);
315 /*****************************************************************************/
317 /*****************************************************************************/
321 void ErrorReport (void)
322 /* Report errors (called at end of compile) */
324 Print (stdout, 1, "%u errors, %u warnings\n", ErrorCount, WarningCount);