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trying to avoid bug #72150 which was apparently caused by a gcc bug (or a

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* xpath.c: trying to avoid bug #72150 which was apparently
  caused by a gcc bug (or a processor problem) as detailed
  at http://veillard.com/gcc.bug
Daniel
This commit is contained in:
Daniel Veillard
2002-03-07 08:36:03 +00:00
parent f742d34179
commit 7b41613ff3
2 changed files with 37 additions and 8 deletions
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39
xpath.c
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@ -6779,7 +6779,7 @@ xmlXPathParseNameComplex(xmlXPathParserContextPtr ctxt, int qualified) {
double
xmlXPathStringEvalNumber(const xmlChar *str) {
const xmlChar *cur = str;
double ret = 0.0;
double ret;
double mult = 1;
int ok = 0;
int isneg = 0;
@ -6787,6 +6787,7 @@ xmlXPathStringEvalNumber(const xmlChar *str) {
int is_exponent_negative = 0;
#ifdef __GNUC__
unsigned long tmp = 0;
double temp;
#endif
while (IS_BLANK(*cur)) cur++;
@ -6800,15 +6801,20 @@ xmlXPathStringEvalNumber(const xmlChar *str) {
#ifdef __GNUC__
/*
* tmp is a workaround against a gcc compiler bug
* tmp/temp is a workaround against a gcc compiler bug
* http://veillard.com/gcc.bug
*/
ret = 0;
while ((*cur >= '0') && (*cur <= '9')) {
tmp = tmp * 10 + (*cur - '0');
ret = ret * 10;
tmp = (*cur - '0');
ok = 1;
cur++;
temp = (double) tmp;
ret = ret + temp;
}
ret = (double) tmp;
#else
ret = 0;
while ((*cur >= '0') && (*cur <= '9')) {
ret = ret * 10 + (*cur - '0');
ok = 1;
@ -6862,23 +6868,40 @@ xmlXPathCompNumber(xmlXPathParserContextPtr ctxt)
{
double ret = 0.0;
double mult = 1;
int ok = 0, tmp = 0;
int ok = 0;
int exponent = 0;
int is_exponent_negative = 0;
#ifdef __GNUC__
unsigned long tmp = 0;
double temp;
#endif
CHECK_ERROR;
if ((CUR != '.') && ((CUR < '0') || (CUR > '9'))) {
XP_ERROR(XPATH_NUMBER_ERROR);
}
#ifdef __GNUC__
/*
* Try to work around a gcc optimizer bug
* tmp/temp is a workaround against a gcc compiler bug
* http://veillard.com/gcc.bug
*/
ret = 0;
while ((CUR >= '0') && (CUR <= '9')) {
tmp = tmp * 10 + (CUR - '0');
ret = ret * 10;
tmp = (CUR - '0');
ok = 1;
NEXT;
temp = (double) tmp;
ret = ret + temp;
}
ret = (double) tmp;
#else
ret = 0;
while ((CUR >= '0') && (CUR <= '9')) {
ret = ret * 10 + (CUR - '0');
ok = 1;
NEXT;
}
#endif
if (CUR == '.') {
NEXT;
if (((CUR < '0') || (CUR > '9')) && (!ok)) {