https://llvm.org/bugs/show_bug.cgi?id=29060
Bug ID: 29060
Summary: alloc/dealloc mismatch caught by ASAN
Product: libc++
Version: 3.8
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: alex.zavo...@gmail.com
CC: llvm-bugs@lists.llvm.org, mclow.li...@gmail.com
Classification: Unclassified
Created attachment 17006
--> https://llvm.org/bugs/attachment.cgi?id=17006&action=edit
Test code that reproduces the error.
This simple code produces an alloc-dealloc-mismatch report when run with
address sanitization enabled:
#include <stdexcept>
int main()
{
try {
throw std::runtime_error("");
} catch (std::exception const&) {
}
}
Command line used for compilation:
clang++ -fsanitize=address --stdlib=libc++ alloc_dealloc_mismatch_repro.cpp
Produces, on execution:
=================================================================
==11344==ERROR: AddressSanitizer: alloc-dealloc-mismatch (operator new [] vs
operator delete) on 0x60300000efe0
#0 0x4f2740 (/tmp/repro/a.out+0x4f2740)
#1 0x7ff6d213cf00 (/usr/lib/x86_64-linux-gnu/libc++.so.1+0xc3f00)
#2 0x7ff6d20f6a30 (/usr/lib/x86_64-linux-gnu/libc++.so.1+0x7da30)
#3 0x4f5028 (/tmp/repro/a.out+0x4f5028)
#4 0x7ff6d118ff44 (/lib/x86_64-linux-gnu/libc.so.6+0x21f44)
#5 0x419d65 (/tmp/repro/a.out+0x419d65)
0x60300000efe0 is located 0 bytes inside of 25-byte region
[0x60300000efe0,0x60300000eff9)
allocated by thread T0 here:
#0 0x4f2290 (/tmp/repro/a.out+0x4f2290)
#1 0x7ff6d213194c (/usr/lib/x86_64-linux-gnu/libc++.so.1+0xb894c)
#2 0x7ff6d118ff44 (/lib/x86_64-linux-gnu/libc.so.6+0x21f44)
SUMMARY: AddressSanitizer: alloc-dealloc-mismatch (/tmp/repro/a.out+0x4f2740)
==11344==HINT: if you don't care about these errors you may set
ASAN_OPTIONS=alloc_dealloc_mismatch=0
==11344==ABORTING
This reproduces reliably using clang-3.8, on Ubuntu 14.04.
NOTE: the problem does not reproduce with --stdlib=libstdc++.
NOTE: this appears to be a duplicate of bug ID 17379, which is marked as fixed,
but as mentioned still repros on clang-3.8.
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