28 lines
1.1 KiB
Diff
28 lines
1.1 KiB
Diff
From 51bf279a63f1ae3f4a8fc255d12f3b339741dd2e Mon Sep 17 00:00:00 2001
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Date: Fri, 22 Jan 2021 16:25:49 +0800
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Subject: Fix LineBuffer::vappend when buffer too small
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Summary: <runtime>: fix LineBuffer::vappend when buffer too small
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LLT: NA
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Bug url: NA
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---
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hotspot/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.cpp | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.cpp
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index 75a9a5f95..185b7d67e 100644
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--- a/hotspot/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.cpp
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+++ b/hotspot/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.cpp
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@@ -42,7 +42,7 @@ private:
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void vappend(const char* format, va_list ap) ATTRIBUTE_PRINTF(2, 0) {
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int res = os::vsnprintf(&_buffer[_cur], BUFFER_LEN - _cur, format, ap);
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- if (res > BUFFER_LEN) {
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+ if (_cur + res > BUFFER_LEN) {
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DEBUG_ONLY(warning("buffer too small in LineBuffer");)
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_buffer[BUFFER_LEN -1] = 0;
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_cur = BUFFER_LEN; // vsnprintf above should not add to _buffer if we are called again
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--
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2.19.0
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