Unaddressable access under _putenv

[derekbruening]

From [email protected] on August 13, 2010 11:24:19

On r33 /v1.2.1 on Windows XP

#include <stdlib.h>

int main() {
_putenv("VAR=VALUE");
return 0;
}

built with "cl /Zi test.cpp" gives the following report:

Error #1: UNADDRESSABLE ACCESS: writing 0x000117f8-0x000117f9 1 byte(s) within 0x000117f8-0x000117fc
@0:00:01.219 in thread 14188
0x7c9022ad <ntdll.dll+0x22ad> ntdll.dll!memmove
??:0
0x7c923a1a <ntdll.dll+0x23a1a> ntdll.dll!RtlDestroyEnvironment
??:0
0x7c83351a <KERNEL32.dll+0x3351a> KERNEL32.dll!SetEnvironmentVariableA
??:0
0x00402111 <test.exe+0x2111> test.exe!__crtsetenv
f:\dd\vctools\crt_bld\self_x86\crt\src\setenv.c:338
0x00401156 <test.exe+0x1156> test.exe!_putenv_helper
f:\dd\vctools\crt_bld\self_x86\crt\src\putenv.c:268
0x0040125a <test.exe+0x125a> test.exe!_putenv
f:\dd\vctools\crt_bld\self_x86\crt\src\putenv.c:78
0x0040101d <test.exe+0x101d> test.exe!main
z:\dr-sandbox\issues\putenv\test.cpp:4
0x004014ec <test.exe+0x14ec> test.exe!__tmainCRTStartup
f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:327
0x7c817077 <KERNEL32.dll+0x17077> KERNEL32.dll!RegisterWaitForInputIdle
??:0

Original issue: http://code.google.com/p/drmemory/issues/detail?id=28