Perl_gv_fetchmethod{,_autoload,_flags} are actually never* called with

a non-NULL stash. So change the parameter to NN.
* Fixed the one really obscure hitherto untested case.

p4raw-id: //depot/perl@33706

4 files changed, 12 insertions, 8 deletions

diff --git a/embed.fnc b/embed.fnc
index 49eb9c273a..48bddee9a8 100644
--- a/embed.fnc
+++ b/embed.fnc
@@ -297,9 +297,10 @@ Ap	|GV*	|gv_fetchfile_flags|NN const char *const name|const STRLEN len\
 				|const U32 flags
 Apd	|GV*	|gv_fetchmeth	|NULLOK HV* stash|NN const char* name|STRLEN len|I32 level
 Apd	|GV*	|gv_fetchmeth_autoload	|NULLOK HV* stash|NN const char* name|STRLEN len|I32 level
-Apdmb	|GV*	|gv_fetchmethod	|NULLOK HV* stash|NN const char* name
-Apd	|GV*	|gv_fetchmethod_autoload|NULLOK HV* stash|NN const char* name|I32 autoload
-ApdM	|GV*	|gv_fetchmethod_flags|NULLOK HV* stash|NN const char* name \
+Apdmb	|GV*	|gv_fetchmethod	|NN HV* stash|NN const char* name
+Apd	|GV*	|gv_fetchmethod_autoload|NN HV* stash|NN const char* name \
+				|I32 autoload
+ApdM	|GV*	|gv_fetchmethod_flags|NN HV* stash|NN const char* name \
 				|U32 flags
 Ap	|GV*	|gv_fetchpv	|NN const char *nambeg|I32 add|const svtype sv_type
 Ap	|void	|gv_fullname	|NN SV* sv|NN const GV* gv
diff --git a/gv.c b/gv.c
index 5eb09c2458..0b17aec144 100644
--- a/gv.c
+++ b/gv.c
@@ -622,7 +622,7 @@ Perl_gv_fetchmethod_flags(pTHX_ HV *stash, const char *name, U32 flags)
 
     PERL_ARGS_ASSERT_GV_FETCHMETHOD_AUTOLOAD;
 
-    if (stash && SvTYPE(stash) < SVt_PVHV)
+    if (SvTYPE(stash) < SVt_PVHV)
 	stash = NULL;
 
     for (nend = name; *nend; nend++) {
diff --git a/pp_sys.c b/pp_sys.c
index 98a958dc81..59439e9f17 100644
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -942,7 +942,7 @@ PP(pp_dbmopen)
 	PUTBACK;
 	require_pv("AnyDBM_File.pm");
 	SPAGAIN;
-	if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
+	if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH")))
 	    DIE(aTHX_ "No dbm on this machine");
     }
 
diff --git a/proto.h b/proto.h
index 8d0ae939fb..cba5fa13fd 100644
--- a/proto.h
+++ b/proto.h
@@ -894,19 +894,22 @@ PERL_CALLCONV GV*	Perl_gv_fetchmeth_autoload(pTHX_ HV* stash, const char* name,
 	assert(name)
 
 /* PERL_CALLCONV GV*	Perl_gv_fetchmethod(pTHX_ HV* stash, const char* name)
+			__attribute__nonnull__(pTHX_1)
 			__attribute__nonnull__(pTHX_2); */
 #define PERL_ARGS_ASSERT_GV_FETCHMETHOD	\
-	assert(name)
+	assert(stash); assert(name)
 
 PERL_CALLCONV GV*	Perl_gv_fetchmethod_autoload(pTHX_ HV* stash, const char* name, I32 autoload)
+			__attribute__nonnull__(pTHX_1)
 			__attribute__nonnull__(pTHX_2);
 #define PERL_ARGS_ASSERT_GV_FETCHMETHOD_AUTOLOAD	\
-	assert(name)
+	assert(stash); assert(name)
 
 PERL_CALLCONV GV*	Perl_gv_fetchmethod_flags(pTHX_ HV* stash, const char* name, U32 flags)
+			__attribute__nonnull__(pTHX_1)
 			__attribute__nonnull__(pTHX_2);
 #define PERL_ARGS_ASSERT_GV_FETCHMETHOD_FLAGS	\
-	assert(name)
+	assert(stash); assert(name)
 
 PERL_CALLCONV GV*	Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, const svtype sv_type)
 			__attribute__nonnull__(pTHX_1);