GNU C compiler (gcc) doesn't warn that string functions are undeclared

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From: meissner
Date: Tue, 27 Oct 1992 04:40

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| While using the latest version of it on OpenVMS Alpha AXP:
| 
| $ cc test_strcpy.c
| 
|         strcpy(str,"Hello World!");
| ........^
| %CC-I-PASIMPLFUNDEC, In this statement, the identifier "strcpy" is implicitly de
| clared as a function.
| at line number 8 in file USER$1:[DOUCETTE]TEST_STRCPY.C;1
| 
| This is the kind of warning I am looking for. Apparently these functions
| are predeclared in some compilers.

If you use the -fno-builtin switch, it will disable GCC from
implicitly declaring strcpy, memcpy, and friends.

--
Michael Meissner	email: meissner@osf.org		phone: 617-621-8861
Open Software Foundation, 11 Cambridge Center, Cambridge, MA, 02142

You are in a twisty little passage of standards, all conflicting.

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From: meissner@osf.ORG
Subject: GNU C compiler (gcc) doesn't warn that string functions are undeclared
Message-ID: <9210271440.AA19967@tiktok.osf.org>
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References: meissner@osf.ORG
Distribution: gnu
Date: Tue, 27 Oct 1992 04:40:58 GMT
Approved: bug-gcc@prep.ai.mit.edu
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