ld resolving different types

From	Norman Goldstein <normvcr@telus.net>
Newsgroups	gnu.utils.bug
Subject	ld resolving different types
Date	2020-02-15 16:51 -0800
Message-ID	<mailman.946.1581814281.2412.bug-gnu-utils@gnu.org> (permalink)
References	<4cb01f16-bfc7-73cc-183c-ad6e8c76863c@telus.net>

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LD version:
    GNU ld version 2.31.1-37.fc30

Platform:
    Linux 5.4.17-100.fc30.x86_64 #1 SMP     x86_64 x86_64 x86_64 GNU/Linux

Compile/Link command:
     gcc tlink.cpp tlink2.cpp -o tlink -lstdc++

The programs compiles and links without warning or error, but resolves 
/extern int foo/ with /double foo/.  The result of running the program 
is, of course, garbage:

foo= -858993459

The program contains only 1 definition for foo (the extern statement is 
a declaration), so the program is not violating the One Definition Rule.

Thank you.

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ld resolving different types Norman Goldstein <normvcr@telus.net> - 2020-02-15 16:51 -0800

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