Description
| Bugzilla Link | 12283 |
| Resolution | FIXED |
| Resolved on | Jun 15, 2016 19:52 |
| Version | trunk |
| OS | Windows NT |
| Blocks | llvm/llvm-bugzilla-archive#13707 |
| CC | @amccarth-google,@asl,@majnemer,@echristo,@tritao,@tkremenek,@rnk |
Extended Description
$ clang.exe -v
clang version 3.1 (trunk 152788)
Target: i686-pc-win32
Thread model: posix
$ cl /nologo /Zi debug_info.c dbghelp.lib && debug_info.exe
debug_info.c
#00 main debug_info.c:12
#01 __tmainCRTStartup f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:266
#02 BaseThreadInitThunk+0x00000012
#03 RtlInitializeExceptionChain+0x00000063
#04 RtlInitializeExceptionChain+0x00000036
Done
$ clang.exe -g debug_info.c "C:\Program Files\Microsoft SDKs\Windows\v7.0\Lib\dbghelp.lib" && a.out
#00
#01
#02 BaseThreadInitThunk+0x00000012
#03 RtlInitializeExceptionChain+0x00000063
#04 RtlInitializeExceptionChain+0x00000036
Done
$ more debug_info.c
#include <windows.h>
#include <dbghelp.h>
#include <stdio.h>
#pragma comment(lib, "dbghelp.lib")
#define CHECK(x) do { if (!(x)) { printf("%s failed\n", #x); abort(); } } while(0)
int main(void) {
void *stacktrace[16];
size_t n, count = CaptureStackBackTrace(0, 16, stacktrace, NULL);
HANDLE proc = GetCurrentProcess();
CHECK(SymInitialize(proc, NULL, TRUE));
for (n = 0; n < 16 && n < count; ++n) {
// See http://msdn.microsoft.com/en-us/library/ms680578(VS.85).aspx
char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(CHAR)];
PSYMBOL_INFO symbol = (PSYMBOL_INFO)buffer;
IMAGEHLP_LINE64 info;
DWORD64 offset = 0;
DWORD unused;
BOOL got_objname, got_fileline;
DWORD64 addr = (DWORD64)stacktrace[n];
symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
symbol->MaxNameLen = MAX_SYM_NAME;
got_objname = SymFromAddr(proc, addr, &offset, symbol);
info.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
got_fileline = SymGetLineFromAddr64(proc, addr, &unused, &info);
if (got_fileline) {
printf(" #%02d %s %s:%ld\n", n, symbol->Name, info.FileName, info.LineNumber);
} else if (got_objname) {
printf(" #%02d %s+0x%p\n", n, symbol->Name, (void*)offset);
} else {
printf(" #%02d <no info>\n", n);
}
}
printf("Done\n");
return 0;
}