drsyms: fails to demangle symbols in some cases on Windows

[derekbruening]

From rnk@google.com on October 28, 2011 17:03:02

I saw this while I was looking through a drmemory results file:

Error #9: LEAK 1 direct bytes 0x00217ed8-0x00217ed9 + 0 indirect bytes
#0 MSVCR90.dll!??2@YAPAXI@Z (0x73403eb8 <MSVCR90.dll+0x63eb8>)
??:0
#1 MSVCP90.dll!??$norm@O@std@@YAOABV?$complex@O@0@@z (0x7345fed9 <MSVCP90.dll+0xfed9>)
??:0
#2 MSVCP90.dll!?_Init@?$numpunct@D@std@@IAEXABV_Locinfo@2@_N@Z (0x73460e39 <MSVCP90.dll+0x10e39>)
??:0
#3 MSVCP90.dll!??0?$numpunct@D@std@@QAE@ABV_Locinfo@1@I_N@Z (0x73464d91 <MSVCP90.dll+0x14d91>)
??:0
#4 MSVCP90.dll!?_Getcat@?$numpunct@D@std@@SAIPAPBVfacet@locale@2@PBV42@@z (0x73469d69 <MSVCP90.dll+0x19d69>)
??:0
#5 MSVCP90.dll!??$?H_WU?$char_traits@_W@std@@v?$allocator@_W@1@@std@@ya?AV?$basic_string@_WU?$char_traits@_W@std@@v?$allocator@_W@2@@0@PB_WABV10@@z (0x7346cb76 <MSVCP90.dll+0x1cb76>)
??:0
#6 MSVCP90.dll!?_Iput@?$num_put@DV?$ostreambuf_iterator@DU?$char_traits@D@std@@@std@@@std@@AbA?AV?$ostreambuf_iterator@DU?$char_traits@D@std@@@2@V32@AAVios_base@2@DPADI@Z (0x7346e961 <MSVCP90.dll+0x1e961>)
??:0
#7 MSVCP90.dll!?do_put@?$num_put@DV?$ostreambuf_iterator@DU?$char_traits@D@std@@@std@@@std@@mbe?AV?$ostreambuf_iterator@DU?$char_traits@D@std@@@2@V32@AAVios_base@2@DK@Z (0x734797f7 <MSVCP90.dll+0x297f7>)
??:0
#8 MSVCP90.dll!?put@?$num_put@_WV?$ostreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@qbe?AV?$ostreambuf_iterator@_WU?$char_traits@_W@std@@@2@V32@AAVios_base@2@_WK@Z (0x7345de48 <MSVCP90.dll+0xde48>)
??:0
#9 MSVCP90.dll!??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@I@Z (0x7347bc69 <MSVCP90.dll+0x2bc69>)
??:0
#10 test_leaks (0x003e1484 <cs2bugMD.exe+0x1484>)
c:\src\drmemory\tests\cs2bug.cpp:136
#11 main (0x003e122d <cs2bugMD.exe+0x122d>)
c:\src\drmemory\tests\cs2bug.cpp:196

The dbghelp docs say you cannot flip the SYMOPT_UNDNAME flag back and forth because it builds a table of symbols in memory once when you it loads symbols. I ignored it because my testing seemed to show otherwise. I'll have to go back and either make sure it's always on or always off. I'm worried that if it's always off, when we use drsym_search_symbols, we'll be searching mangled names. For all other functions, I can tolerate it being always off by doing the demangling myself.

Original issue: http://code.google.com/p/dynamorio/issues/detail?id=595

[derekbruening]

From rnk@google.com on November 04, 2011 14:11:21

Fixed by r1130 .

Status: Fixed