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Use platform limits for include file name buffer size #559

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Merged
merged 1 commit into from
Sep 22, 2025
Merged

Use platform limits for include file name buffer size #559

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9 changes: 5 additions & 4 deletions src/pp.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2968,7 +2968,7 @@ LOCAL RC FC ppcDoI( // decode/execute preprocessor command inner. call ppctIni(
// returned error code other than RCFATAL ignored by caller
{
SI c, c1, c2, value, noCheckEnd = 0;
char fnBuf[81], ppcWord[1+32+1], *q;
char ppcWord[1+32+1], *q;
RC rc;

// syntax verify beginning of command
Expand Down Expand Up @@ -3113,21 +3113,22 @@ elifJoins: ; // set compile on or off per 'value'
if (strchr( "<\"", c1)==NULL)
return ppErr( MH_P0038); // "'<' or '\"' expected"
c2 = (c1 == '<') ? '>' : c1;
for (q = fnBuf; ; ) // scan/copy file name
char file_name_buffer[CSE_MAX_PATH];
for (q = file_name_buffer; ; ) // scan/copy file name
{
c = ppCNdc(); // get char NOT DECOMMENTED
if (c==c2) // if expected terminator
break;
if (c==EOF) // if end of input
return ppErr( MH_P0045, c2); // "Closing '%c' not found"
if (q < fnBuf + sizeof(fnBuf)-1) // truncate at bufSize
if (q < file_name_buffer + sizeof(file_name_buffer)-1) // truncate at bufSize
*q++ = (char)c; // copy name so can terminate
}
*q = 0;
CHECKEND; // now: after open, errmsg wd have wrong file
// execute #include
// filename syntax check worth the bother?
if (ppOpI( fnBuf, ".inp") ) // open incl file, pp.cpp
if (ppOpI( file_name_buffer, ".inp") ) // open incl file, pp.cpp
return RCBAD; // if file not found or out of memory
break;

Expand Down