diff options
Diffstat (limited to 'sprintf.c')
-rw-r--r-- | sprintf.c | 14 |
1 files changed, 11 insertions, 3 deletions
@@ -1153,6 +1153,10 @@ ruby_vsprintf0(VALUE result, char *p, const char *fmt, va_list ap) rb_printf_buffer_extra buffer; #define f buffer.base VALUE klass = RBASIC(result)->klass; + int coderange = ENC_CODERANGE(result); + long scanned = 0; + + if (coderange != ENC_CODERANGE_UNKNOWN) scanned = p - RSTRING_PTR(result); f._flags = __SWR | __SSTR; f._bf._size = 0; @@ -1165,9 +1169,13 @@ ruby_vsprintf0(VALUE result, char *p, const char *fmt, va_list ap) buffer.value = 0; BSD_vfprintf(&f, fmt, ap); RBASIC_SET_CLASS_RAW(result, klass); - // vfprintf mutates the string without updating coderange - ENC_CODERANGE_CLEAR(result); - rb_str_resize(result, (char *)f._p - RSTRING_PTR(result)); + p = RSTRING_PTR(result); + long blen = (char *)f._p - p; + if (scanned < blen) { + rb_str_coderange_scan_restartable(p + scanned, p + blen, rb_enc_get(result), &coderange); + ENC_CODERANGE_SET(result, coderange); + } + rb_str_resize(result, blen); #undef f } |