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Tim Peters fixed PR#75: very long lines cause incorrect tracebacks.

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Guido van Rossum 1999-09-18 20:49:39 +00:00
parent 458e7fab9b
commit 3aca65312a
1 changed files with 11 additions and 2 deletions
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13
Python/traceback.c
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@ -197,8 +197,17 @@ tb_displayline(f, filename, lineno, name)
if (xfp == NULL || err != 0) if (xfp == NULL || err != 0)
return err; return err;
for (i = 0; i < lineno; i++) { for (i = 0; i < lineno; i++) {
if (fgets(linebuf, sizeof linebuf, xfp) == NULL) char* pLastChar = &linebuf[sizeof(linebuf)-2];
break; do {
*pLastChar = '\0';
if (fgets(linebuf, sizeof linebuf, xfp) == NULL)
break;
/* fgets read *something*; if it didn't get as
far as pLastChar, it must have found a newline
or hit the end of the file; if pLastChar is \n,
it obviously found a newline; else we haven't
yet seen a newline, so must continue */
} while (*pLastChar != '\0' && *pLastChar != '\n');
} }
if (i == lineno) { if (i == lineno) {
char *p = linebuf; char *p = linebuf;