Use correct type when calling va_arg in formatter
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parent
4ac55be9b5
commit
27c96dde77
76
hiredis.c
76
hiredis.c
@ -770,33 +770,81 @@ int redisvFormatCommand(char **target, const char *format, va_list ap) {
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while (*_p != '\0' && isdigit(*_p)) _p++;
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}
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/* Modifiers */
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if (*_p != '\0') {
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if (*_p == 'h' || *_p == 'l') {
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/* Allow a single repetition for these modifiers */
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if (_p[0] == _p[1]) _p++;
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_p++;
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}
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/* Copy va_list before consuming with va_arg */
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va_copy(_cpy,ap);
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/* Integer conversion (without modifiers) */
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if (strchr("diouxX",*_p) != NULL) {
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va_arg(ap,int);
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goto fmt_valid;
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}
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/* Conversion specifier */
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if (*_p != '\0' && strchr("diouxXeEfFgGaA",*_p) != NULL) {
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/* Double conversion (without modifiers) */
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if (strchr("eEfFgGaA",*_p) != NULL) {
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va_arg(ap,double);
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goto fmt_valid;
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}
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/* Size: char */
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if (_p[0] == 'h' && _p[1] == 'h') {
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_p += 2;
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if (*_p != '\0' && strchr("diouxX",*_p) != NULL) {
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va_arg(ap,int); /* char gets promoted to int */
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goto fmt_valid;
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}
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goto fmt_invalid;
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}
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/* Size: short */
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if (_p[0] == 'h') {
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_p += 1;
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if (*_p != '\0' && strchr("diouxX",*_p) != NULL) {
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va_arg(ap,int); /* short gets promoted to int */
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goto fmt_valid;
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}
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goto fmt_invalid;
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}
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/* Size: long long */
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if (_p[0] == 'l' && _p[1] == 'l') {
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_p += 2;
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if (*_p != '\0' && strchr("diouxX",*_p) != NULL) {
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va_arg(ap,long long);
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goto fmt_valid;
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}
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goto fmt_invalid;
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}
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/* Size: long */
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if (_p[0] == 'l') {
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_p += 1;
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if (*_p != '\0' && strchr("diouxX",*_p) != NULL) {
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va_arg(ap,long);
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goto fmt_valid;
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}
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goto fmt_invalid;
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}
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fmt_invalid:
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/* Consume and discard vararg */
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va_arg(ap,void);
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va_end(_cpy);
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break;
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fmt_valid:
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_l = (_p+1)-c;
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if (_l < sizeof(_format)-2) {
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memcpy(_format,c,_l);
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_format[_l] = '\0';
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va_copy(_cpy,ap);
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newarg = sdscatvprintf(curarg,_format,_cpy);
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va_end(_cpy);
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/* Update current position (note: outer blocks
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* increment c twice so compensate here) */
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c = _p-1;
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}
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}
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/* Consume and discard vararg */
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va_arg(ap,void);
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va_end(_cpy);
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break;
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}
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}
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