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From: cagney@sourceware.org
To: frysk-cvs@sourceware.org
Subject: [SCM]  master: Correctly check error returned by dwarf_get_scopevar.
Date: Mon, 16 Jun 2008 12:08:00 -0000	[thread overview]
Message-ID: <20080616120840.23059.qmail@sourceware.org> (raw)

The branch, master has been updated
       via  8168d6edcf7a58fc490b9a4d37647b3576345334 (commit)
      from  a9c05fad829ce6b638eadeb1c93a44e71c4dd457 (commit)

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- Log -----------------------------------------------------------------
commit 8168d6edcf7a58fc490b9a4d37647b3576345334
Author: Andrew Cagney <cagney@redhat.com>
Date:   Mon Jun 16 08:07:47 2008 -0400

    Correctly check error returned by dwarf_get_scopevar.
    
    frysk-core/frysk/debuginfo/ChangeLog
    2008-06-15  Andrew Cagney  <cagney@redhat.com>
    
    	* gen-type-expect-tests.py (open_file): Use assert, not if/println
    	to detect and report bad values.
    
    frysk-sys/lib/dwfl/ChangeLog
    2008-06-15  Andrew Cagney  <cagney@redhat.com>
    
    	* DwarfDie.java (get_scopevar): Return an int.
    	* jni/DwarfDie.cxx (DwarfDie::get_scopevar): Only examine the die
    	when its valid.
    	* cni/DwarfDie.cxx (DwarfDie::get_scopevar): Ditto.

-----------------------------------------------------------------------

Summary of changes:
 frysk-core/frysk/debuginfo/ChangeLog               |    5 +++
 .../frysk/debuginfo/gen-type-expect-tests.py       |   15 +-------
 frysk-sys/lib/dwfl/ChangeLog                       |    7 ++++
 frysk-sys/lib/dwfl/DwarfDie.java                   |    3 +-
 frysk-sys/lib/dwfl/cni/DwarfDie.cxx                |   37 +++++++++-----------
 frysk-sys/lib/dwfl/jni/DwarfDie.cxx                |    6 ++--
 6 files changed, 36 insertions(+), 37 deletions(-)

First 500 lines of diff:
diff --git a/frysk-core/frysk/debuginfo/ChangeLog b/frysk-core/frysk/debuginfo/ChangeLog
index d7fe563..37736fc 100644
--- a/frysk-core/frysk/debuginfo/ChangeLog
+++ b/frysk-core/frysk/debuginfo/ChangeLog
@@ -1,3 +1,8 @@
+2008-06-15  Andrew Cagney  <cagney@redhat.com>
+
+	* gen-type-expect-tests.py (open_file): Use assert, not if/println
+	to detect and report bad values.
+
 2008-06-12  Andrew Cagney  <cagney@redhat.com>
 
 	* ObjectDeclarationNotFoundException.java: Extend
diff --git a/frysk-core/frysk/debuginfo/gen-type-expect-tests.py b/frysk-core/frysk/debuginfo/gen-type-expect-tests.py
index c8513c4..0daf18a 100644
--- a/frysk-core/frysk/debuginfo/gen-type-expect-tests.py
+++ b/frysk-core/frysk/debuginfo/gen-type-expect-tests.py
@@ -94,15 +94,10 @@ public class %s extends TestLib {
         print('''
 	void checkType(String symbol, String expected) {
 	    Type varType;
-
 	    DwarfDie varDie = biasDie.getScopeVar(allDies, symbol);
-	    if (varDie == null)
-		System.out.println("Error: Cannot find " + symbol);
-	    assertNotNull(varDie);
+            assertNotNull("die for variable " + symbol, varDie);
 	    varType = typeFactory.getType(varDie.getType());
 	    assertNotNull(varType);
-	    // System.out.println("Expect: " + symbol + "\\n'" +
-	    //    expected + "'\\nGot:\\n'" + varType.toPrint());
 	    assertEquals(testName + symbol, expected, varType.toPrint());
 	}
 
@@ -115,19 +110,13 @@ public class %s extends TestLib {
 		|| expected.length() == 0)
 		return;
 	    DwarfDie varDie = biasDie.getScopeVar(allDies, symbol);
-	    if (varDie == null)
-		System.out.println("Error: Cannot find " + symbol);
-	    assertNotNull(varDie);
+            assertNotNull("die for variable " + symbol, varDie);
 	    DebugInfo debugInfo = new DebugInfo(frame);
 	    Value value =  debugInfo.print(symbol, frame);
 	    value.toPrint(pw, task.getMemory(), Format.NATURAL, 0);
 	    pw.flush();
 	    String valueString = baos.toString();
-	    // System.out.println("Expect: " + symbol +
-	    //     "\\n'" + expected + "'\\nGot:\\n'" +
-	    //     valueString + "'" + " " + value.getType());
 	    assertEquals(testName + symbol, expected, valueString);
-	    baos.reset();
 	}
     }
 ''')
diff --git a/frysk-sys/lib/dwfl/ChangeLog b/frysk-sys/lib/dwfl/ChangeLog
index aa96035..c44bebe 100644
--- a/frysk-sys/lib/dwfl/ChangeLog
+++ b/frysk-sys/lib/dwfl/ChangeLog
@@ -1,3 +1,10 @@
+2008-06-15  Andrew Cagney  <cagney@redhat.com>
+
+	* DwarfDie.java (get_scopevar): Return an int.
+	* jni/DwarfDie.cxx (DwarfDie::get_scopevar): Only examine the die
+	when its valid.
+	* cni/DwarfDie.cxx (DwarfDie::get_scopevar): Ditto.
+
 2008-06-12  Andrew Cagney  <cagney@redhat.com>
 
 	* ElfException.java: Extend UserException.
diff --git a/frysk-sys/lib/dwfl/DwarfDie.java b/frysk-sys/lib/dwfl/DwarfDie.java
index dda1671..bc2d24b 100644
--- a/frysk-sys/lib/dwfl/DwarfDie.java
+++ b/frysk-sys/lib/dwfl/DwarfDie.java
@@ -476,7 +476,8 @@ public class DwarfDie {
 
     private native long[] get_scopes_die ();
 
-    private native long get_scopevar (long[] die_scope, long[] scopes, String variable);
+    private native int get_scopevar(long[] die_scope, long[] scopes,
+				    String variable);
 
     private native long get_scopevar_names (long[] scopes, String variable);
   
diff --git a/frysk-sys/lib/dwfl/cni/DwarfDie.cxx b/frysk-sys/lib/dwfl/cni/DwarfDie.cxx
index c562d2e..b10689d 100644
--- a/frysk-sys/lib/dwfl/cni/DwarfDie.cxx
+++ b/frysk-sys/lib/dwfl/cni/DwarfDie.cxx
@@ -1,6 +1,6 @@
 // This file is part of the program FRYSK.
 //
-// Copyright 2005, 2007, Red Hat Inc.
+// Copyright 2005, 2007, 2008, Red Hat Inc.
 //
 // FRYSK is free software; you can redistribute it and/or modify it
 // under the terms of the GNU General Public License as published by
@@ -165,10 +165,9 @@ lib::dwfl::DwarfDie::get_scopes_die()
 
 Dwarf_Die *var_die;
 
-jlong
-lib::dwfl::DwarfDie::get_scopevar (jlongArray die_scope, jlongArray scopes,
-				 jstring variable)
-{
+jint
+lib::dwfl::DwarfDie::get_scopevar(jlongArray die_scope, jlongArray scopes,
+				 jstring variable) {
   
   var_die = (Dwarf_Die*)JvMalloc(sizeof(Dwarf_Die));
   int nscopes = JvGetArrayLength (scopes);
@@ -176,11 +175,10 @@ lib::dwfl::DwarfDie::get_scopevar (jlongArray die_scope, jlongArray scopes,
   Dwarf_Die *dies[nscopes];
   jlong* scopesp = elements(scopes);
 
-  for(int i = 0; i < nscopes; i++)
-    {
-      jlong dieptr = scopesp[i];
-      dies[i] = (Dwarf_Die*)dieptr;
-    }
+  for(int i = 0; i < nscopes; i++) {
+    jlong dieptr = scopesp[i];
+    dies[i] = (Dwarf_Die*)dieptr;
+  }
   
   int utf_variable_len = variable->length ();
   char utf_variable[utf_variable_len + 1];
@@ -190,16 +188,15 @@ lib::dwfl::DwarfDie::get_scopevar (jlongArray die_scope, jlongArray scopes,
   int code = dwarf_getscopevar (*dies, nscopes,
 				utf_variable,
 				0, NULL, 0, 0, var_die);
-  if (code >= 0)
-    {
-      if (dwarf_tag (var_die) != DW_TAG_variable)
-	return -1;
-      jlong* longp = elements(die_scope);
-      longp[0] = (jlong)var_die;    // Die for variable
-      longp[1] = code; // Die for scope
-    }
-  else if (dwarf_tag (var_die) != DW_TAG_variable)
-    return -1;
+  if (code >= 0) {
+    if (dwarf_tag(var_die) != DW_TAG_variable)
+      return -1;
+    jlong* longp = elements(die_scope);
+    longp[0] = (jlong)var_die;    // Die for variable
+    longp[1] = code; // Die for scope
+  } else {
+    ::free(var_die);
+  }
   return code;
 }
 
diff --git a/frysk-sys/lib/dwfl/jni/DwarfDie.cxx b/frysk-sys/lib/dwfl/jni/DwarfDie.cxx
index 0935d19..0da40c1 100644
--- a/frysk-sys/lib/dwfl/jni/DwarfDie.cxx
+++ b/frysk-sys/lib/dwfl/jni/DwarfDie.cxx
@@ -148,7 +148,7 @@ lib::dwfl::DwarfDie::get_scopes_die(jnixx::env env) {
   return longs;
 }
 
-jlong
+jint
 lib::dwfl::DwarfDie::get_scopevar(jnixx::env env, jnixx::jlongArray jdie_scope,
 				  jnixx::jlongArray jscopes, String jvariable) {
   // FIXME: This appears to be leaked?
@@ -169,8 +169,8 @@ lib::dwfl::DwarfDie::get_scopevar(jnixx::env env, jnixx::jlongArray jdie_scope,
     jlongArrayElements die_scope = jlongArrayElements(env, jdie_scope);
     die_scope.elements()[0] = (jlong)var_die;    // Die for variable
     die_scope.elements()[1] = code; // Die for scope
-  } else if (dwarf_tag (var_die) != DW_TAG_variable) {
-    return -1;
+  } else {
+    ::free(var_die);
   }
   return code;
 }


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