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(rescan): Fix botches with `-lint': the output buffer pointer was not recached properly, leading to lost output.

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(rescan): Fix botches with `-lint': the output buffer pointer was not
recached properly, leading to lost output.  Also, buffer overrun was
possible.

From-SVN: r7896
This commit is contained in:
Richard Kenner 1994-08-11 16:41:33 -04:00
parent c451a7a05b
commit b7150e4597
1 changed files with 8 additions and 3 deletions
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11
gcc/cccp.c
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@ -2797,6 +2797,9 @@ do { ip = &instack[indepth]; \
char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen); char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
if (lintcmd != NULL) { if (lintcmd != NULL) {
op->bufp = obp;
check_expand (op, 13 + cmdlen);
obp = op->bufp;
/* I believe it is always safe to emit this newline: */ /* I believe it is always safe to emit this newline: */
obp[-1] = '\n'; obp[-1] = '\n';
bcopy ("#pragma lint ", (char *) obp, 13); bcopy ("#pragma lint ", (char *) obp, 13);
@ -2811,10 +2814,12 @@ do { ip = &instack[indepth]; \
} }
/* OK, now bring us back to the state we were in before we entered /* OK, now bring us back to the state we were in before we entered
this branch. We need #line b/c the newline for the pragma this branch. We need #line because the #pragma's newline always
could fuck things up. */ messes up the line count. */
op->bufp = obp;
output_line_command (ip, op, 0, same_file); output_line_command (ip, op, 0, same_file);
*(obp++) = ' '; /* just in case, if comments are copied thru */ check_expand (op, ip->length - (ip->bufp - ip->buf));
obp = op->bufp;
*(obp++) = '/'; *(obp++) = '/';
} }
} }