Bug 64 – [constmerge] Constant merging pass merges constants with external linkage

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Summary:

[constmerge] Constant merging pass merges constants with ...

Bug#:	64
Product:	libraries
Component:	Interprocedural Optimizations
Status:	RESOLVED
Resolution:	FIXED

Hardware:	PC
OS:	Linux
Version:	1.0
Priority:	P2
Severity:	normal
Target Milestone:	1.1

URL:

Keywords:

compile-fail

Depends on:

Blocks:

Show dependency tree - Show dependency graph

People

Reporter:	Chris Lattner <sabre@nondot.org>
Assigned To:	Chris Lattner <sabre@nondot.org>

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Description:	Opened: 2003-10-28 23:53

The constant merging pass has no qualms about merging constants with external
linkage, which causes link errors later.  It should only merge constants away
that have internal linkage.

This is tested as:
test/Regression/Transforms/ConstantMerge/2003-10-28-MergeExternalConstants.ll

This causes undefined symbols in libstdc++, specifically "std::ios_base::badbit".

------- Comment #1 From Chris Lattner 2003-10-29 00:03:59 -------

This is now fixed:
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20031027/008939.html

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