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http://bugs.exim.org/show_bug.cgi?id=953
Summary: Visual C++ warning in pcre_globals.c
Product: PCRE
Version: 8.01
Platform: x86
OS/Version: Windows
Status: NEW
Severity: bug
Priority: medium
Component: Code
AssignedTo: ph10@???
ReportedBy: dair@???
CC: pcre-dev@???
pcre_globals.c can generate warnings when built with Visual Studio:
1>Compiling...
1>pcre_globals.c
1>..\pcre_7.8\pcre_globals.c(67) : warning C4232: nonstandard extension used :
1> 'pcre_malloc' : address of dllimport 'malloc' is not static, identity not
guaranteed
1> C:\Program Files\Microsoft Visual Studio 9.0\VC\include\stdlib.h(601) :
see declaration of 'malloc'
1>..\pcre_7.8\pcre_globals.c(68) : warning C4232: nonstandard extension used :
'pcre_free' :
1> address of dllimport 'free' is not static, identity not guaranteed
1> C:\Program Files\Microsoft Visual Studio 9.0\VC\include\stdlib.h(600) :
see declaration of 'free'
1>..\pcre_7.8\pcre_globals.c(69) : warning C4232: nonstandard extension used :
'pcre_stack_malloc' :
1> address of dllimport 'malloc' is not static, identity not guaranteed
1> C:\Program Files\Microsoft Visual Studio 9.0\VC\include\stdlib.h(601) :
see declaration of 'malloc'
1>..\pcre_7.8\pcre_globals.c(70) : warning C4232: nonstandard extension used :
'pcre_stack_free' :
1> address of dllimport 'free' is not static, identity not guaranteed
1> C:\Program Files\Microsoft Visual Studio 9.0\VC\include\stdlib.h(600) :
see declaration of 'free'
These relate to
http://msdn.microsoft.com/en-us/library/da6zd0a4.aspx and seem
to be due to taking the address of a symbol contained within an external DLL.
A fix is to initialise the globals to the address of a local function instead:
static void *glue_malloc(size_t theSize)
{
return(malloc(theSize));
}
static void glue_free(void *thePtr)
{
free(thePtr);
}
PCRE_EXP_DATA_DEFN void *(*pcre_malloc)(size_t) = glue_malloc;
PCRE_EXP_DATA_DEFN void (*pcre_free)(void *) = glue_free;
PCRE_EXP_DATA_DEFN void *(*pcre_stack_malloc)(size_t) = glue_malloc;
PCRE_EXP_DATA_DEFN void (*pcre_stack_free)(void *) = glue_free;
PCRE_EXP_DATA_DEFN int (*pcre_callout)(pcre_callout_block *) = NULL;
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