[project @ 2004-09-16 08:13:02 by stolz]

Collect unknown chunks in new chkcat 'unknown' which gets treated like
'misc', but isn't mangled on sparc-*-solaris2 because of function
definitions in C-headers like <pwd.h>. This shouldn't affect any
other platform since this was already a border-case.

Closes SF Bug 1012521 "getUserEntryForID dies".
Please merge.

ghc/driver/mangler/ghc-asm.lprl

@@ -615,8 +615,9 @@ sub mangle_asm {
 	    local($thing);
 	    chop($thing = $_);
 	    $thing =~ s/:$//;
-	    print STDERR "Warning: retaining unknown function \`$thing' in output from C compiler\n"
-		unless # $KNOWN_FUNNY_THING{$thing}
+	    $chk[++$i]   = $_;
+	    $chksymb[$i] = '';
+	    if (
 		       /^${T_US}stg_.*${T_POST_LBL}$/o          # RTS internals
 		    || /^${T_US}__stg_.*${T_POST_LBL}$/o        # more RTS internals
 		    || /^${T_US}__fexp_.*${T_POST_LBL}$/o       # foreign export
@@ -626,10 +627,13 @@ sub mangle_asm {
 		    || /^${T_US}.*_srtd${T_POST_LBL}$/o          # large bitmaps
 		    || /^${T_US}.*_fast${T_POST_LBL}$/o         # primops
 		    || /^${T_US}.*_closure_tbl${T_POST_LBL}$/o  # closure tables
-                    || /^_uname:/o;			        # x86/Solaris2
-	    $chk[++$i]   = $_;
-	    $chkcat[$i]  = 'misc';
-	    $chksymb[$i] = '';
+                    || /^_uname:/o			        # x86/Solaris2
+		) {
+	    		$chkcat[$i]  = 'misc';
+		  } else {
+	       		print STDERR "Warning: retaining unknown function \`$thing' in output from C compiler\n";
+	    		$chkcat[$i]  = 'unknown';
+		}
 
 	} elsif ( $TargetPlatform =~ /^powerpc-apple-.*/ && ( 
 		   /^\.picsymbol_stub/
@@ -866,9 +870,12 @@ sub mangle_asm {
 
 	# On SPARCs, we don't do --- BEGIN/END ---, we just
 	# toss the register-windowing save/restore/ret* instructions
-	# directly:
+	# directly unless they've been generated by function definitions in header
+	# files on Solaris:
 	if ( $TargetPlatform =~ /^sparc-/ ) {
-	    $c =~ s/^\t(save.*|restore.*|ret|retl)\n//g;
+	    if ( ! ( $TargetPlatform =~ /solaris2$/ && $chkcat[$i] eq 'unknown' )) {
+	    	$c =~ s/^\t(save.*|restore.*|ret|retl)\n//g;
+	    }
 	    # throw away PROLOGUE comments
 	    $c =~ s/^\t!#PROLOGUE# 0\n\t!#PROLOGUE# 1\n//;
 	}
@@ -1031,7 +1038,7 @@ sub mangle_asm {
 
 	next if $chkcat[$i] eq 'DONE ALREADY';
 
-	if ( $chkcat[$i] eq 'misc' ) {
+	if ( $chkcat[$i] eq 'misc' || $chkcat[$i] eq 'unknown' ) {
 	    if ($chk[$i] ne '') {
 		print OUTASM $T_HDR_misc;
  		&print_doctored($chk[$i], 0);