[llvm-commits] CVS: llvm/lib/Bytecode/Reader/Reader.cpp

[LLVM]

Changes in directory llvm/lib/Bytecode/Reader:

Reader.cpp updated: 1.110 -> 1.111

---
Log message:

Fix a backwards compatibility bug found by Tanya. In version 1.2, the
global type plane starts with a length and the TypeTyID value to identify
the type plane has having type definitions. This doesn't happen in 1.3
because the types are read from a known position in the file. However, the
TypeTyID must be read in (and ignored) if its a 1.2 bytecode file.


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Diffs of the changes:  (+5 -0)

Index: llvm/lib/Bytecode/Reader/Reader.cpp
diff -u llvm/lib/Bytecode/Reader/Reader.cpp:1.110 llvm/lib/Bytecode/Reader/Reader.cpp:1.111
--- llvm/lib/Bytecode/Reader/Reader.cpp:1.110	Sun Jul  4 19:57:50 2004
+++ llvm/lib/Bytecode/Reader/Reader.cpp	Fri Jul  9 16:13:53 2004
@@ -1641,6 +1641,11 @@
 void BytecodeReader::ParseGlobalTypes() {
   // Read the number of types
   unsigned NumEntries = read_vbr_uint();
+
+  // Ignore the type plane identifier for types if the bc file is pre 1.3
+  if (hasTypeDerivedFromValue)
+    read_vbr_uint();
+
   ParseTypeConstants(ModuleTypes, NumEntries);
 }