I found a batch of /analyze warnings in the pdfium\xfa code that all look legitimate. The first one may not be a bug but we should at least assert that the array is non-empty or, simpler yet, initialize dwID to zero. The others are all bugs, some of them of types that cropped up and were fixed in the non-XFA pdfium code.

The /analyzer builder was not working for a few weeks which is why these are coming in late.

pdfium\xfa\fwl\lightwidget\cfwl_theme.cpp(64) : warning C6001: Using uninitialized memory 'dwID'.

pdfium\xfa\fwl\theme\cfwl_checkboxtp.cpp(174) : warning C6313: Incorrect operator:  zero-valued flag cannot be tested with bitwise-and.  Use an equality test to check for zero-valued flags.

pdfium\xfa\fwl\theme\cfwl_formtp.cpp(86) : warning C6259: Labeled code is unreachable:  '(<expression> & 0x3)' in a switch-expr cannot evaluate to '0x80'.
pdfium\xfa\fwl\theme\cfwl_formtp.cpp(90) : warning C6259: Labeled code is unreachable:  '(<expression> & 0x3)' in a switch-expr cannot evaluate to '0x400'.
pdfium\xfa\fwl\theme\cfwl_formtp.cpp(94) : warning C6259: Labeled code is unreachable:  '(<expression> & 0x3)' in a switch-expr cannot evaluate to '0x8'.
pdfium\xfa\fwl\theme\cfwl_scrollbartp.cpp(55) : warning C6259: Labeled code is unreachable:  '(<expression> & 0x3)' in a switch-expr cannot evaluate to '0x80'.
pdfium\xfa\fwl\theme\cfwl_scrollbartp.cpp(59) : warning C6259: Labeled code is unreachable:  '(<expression> & 0x3)' in a switch-expr cannot evaluate to '0x400'.
pdfium\xfa\fwl\theme\cfwl_scrollbartp.cpp(63) : warning C6259: Labeled code is unreachable:  '(<expression> & 0x3)' in a switch-expr cannot evaluate to '0x8'.

pdfium\xfa\fxbarcode\datamatrix\bc_edifactencoder.cpp(135) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_errorcorrection.cpp(124) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_errorcorrection.cpp(132) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_errorcorrection.cpp(155) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_errorcorrection.cpp(182) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_highlevelencoder.cpp(81) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_symbolinfo.cpp(234) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_symbolinfo.cpp(238) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_symbolinfo.cpp(240) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_symbolinfo.cpp(243) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_symbolinfo.cpp(244) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_symbolinfo.cpp(246) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_symbolinfo.cpp(249) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\datamatrix\bc_symbolinfo.cpp(250) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.
pdfium\xfa\fxbarcode\pdf417\bc_pdf417highlevelencoder.cpp(68) : warning C6276: Cast between semantically different string types:  char * to wchar_t *.  Use of invalid string can lead to undefined behavior.