[PATCH] Fix phony iconv build

[PATCH] Fix phony iconv build

[Pedro Alves]

Cross building for mingw32, I see:

  x86_64-w64-mingw32-g++ -g -O2  [...]  ../../src/gdb/charset.c
  In file included from ../../src/gdb/charset.c:21:0:
  ../../src/gdb/charset.h:134:3: error: 'iconv_t' does not name a type
     iconv_t m_desc;
     ^
  ../../src/gdb/charset.c: In constructor 'wchar_iterator::wchar_iterator(const gdb_byte*, size_t, const char*, size_t)':
  ../../src/gdb/charset.c:600:3: error: 'm_desc' was not declared in this scope
     m_desc = iconv_open (INTERMEDIATE_ENCODING, charset);
     ^
  ../../src/gdb/charset.c: In destructor 'wchar_iterator::~wchar_iterator()':
  ../../src/gdb/charset.c:607:7: error: 'm_desc' was not declared in this scope
     if (m_desc != (iconv_t) -1)
	 ^
  ../../src/gdb/charset.c: In member function 'int wchar_iterator::iterate(wchar_iterate_result*, gdb_wchar_t**, const gdb_byte**, size_t*)':
  ../../src/gdb/charset.c:633:25: error: 'm_desc' was not declared in this scope
	 size_t r = iconv (m_desc, &inptr, &m_bytes, &outptr, &out_avail);
			   ^

This is a regression caused by commit cda6c55bd399 (Turn wchar
iterator into a class).  The problem is that iconv_t is now exposed in
charset.h, while before it was only used in charset.c.  gdb/charset.c,
under #ifdef PHONY_ICONV, does:

 #undef iconv_t
 #define iconv_t int

So it seems the simplest is to use 'int' in the header file too.

Tromey, WDYT?

gdb/ChangeLog:
yyyy-mm-dd  Pedro Alves  <palves@redhat.com>

	* charset.h (class wchar_iterator) [PHONY_ICONV] <m_desc>: Use
	'int' as type.
---
 gdb/charset.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gdb/charset.h b/gdb/charset.h
index 64aa58d..c5feb08 100644
--- a/gdb/charset.h
+++ b/gdb/charset.h
@@ -131,7 +131,11 @@ class wchar_iterator
  private:
 
   /* The underlying iconv descriptor.  */
+#ifdef PHONY_ICONV
+  int m_desc;
+#else
   iconv_t m_desc;
+#endif
 
   /* The input string.  This is updated as we convert characters.  */
   const gdb_byte *m_input;
-- 
2.5.5

Re: [PATCH] Fix phony iconv build

[Tom Tromey]

>>>>> "Pedro" == Pedro Alves <palves@redhat.com> writes:

Pedro> This is a regression caused by commit cda6c55bd399 (Turn wchar
Pedro> iterator into a class).  The problem is that iconv_t is now exposed in
Pedro> charset.h, while before it was only used in charset.c.  gdb/charset.c,
Pedro> under #ifdef PHONY_ICONV, does:

I'm sorry about that.

Pedro> So it seems the simplest is to use 'int' in the header file too.
Pedro> Tromey, WDYT?

Looks good, thanks.

Tom

Re: [PATCH] Fix phony iconv build

[Pedro Alves]

On 10/17/2016 04:59 PM, Tom Tromey wrote:
>>>>>> "Pedro" == Pedro Alves <palves@redhat.com> writes:
> 
> Pedro> This is a regression caused by commit cda6c55bd399 (Turn wchar
> Pedro> iterator into a class).  The problem is that iconv_t is now exposed in
> Pedro> charset.h, while before it was only used in charset.c.  gdb/charset.c,
> Pedro> under #ifdef PHONY_ICONV, does:
> 
> I'm sorry about that.

No worries.  Seems like no build slave is exercising this
code path.

> Pedro> So it seems the simplest is to use 'int' in the header file too.
> Pedro> Tromey, WDYT?
> 
> Looks good, thanks.

Thanks, I'll push it in soon.

Thanks,
Pedro Alves