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-rw-r--r--src/library.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/library.js b/src/library.js
index 6bfb49ef..84071b68 100644
--- a/src/library.js
+++ b/src/library.js
@@ -2869,7 +2869,7 @@ LibraryManager.library = {
} else if (next == {{{ charCode('o') }}}) {
argText = (flagAlternative ? '0' : '') + currAbsArg.toString(8);
} else if (next == {{{ charCode('x') }}} || next == {{{ charCode('X') }}}) {
- prefix = flagAlternative ? '0x' : '';
+ prefix = (flagAlternative && currArg != 0) ? '0x' : '';
#if PRECISE_I64_MATH
if (argSize == 8 && i64Math) {
if (origArg[1]) {