URL:
<http://savannah.nongnu.org/bugs/?36454>
Summary: string.h: Error for long long in C90
Project: AVR C Runtime Library
Submitted by: gjlayde
Submitted on: Sa 12 Mai 2012 08:27:10 GMT
Category: Header
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: None
Status: None
Percent Complete: 0%
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Release: 1.8.0
Fixed Release: None
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Details:
string.h contains the following lines:
# define __ATTR_CONST__ __attribute__((__const__))
extern int ffsll (long long __val) __ATTR_CONST__;
long long is available since C99. Consequently, compiling or syntax-checking
the above line with C90 may run into
error: ISO C90 does not support 'long long' [-Wlong-long]
This is particularly inconvenient in the avr-gcc testsuite, for example,
because it's not appropriate to add -Wno-long-long to the testsuite or use
similar hacks.
Such prototypes should be shielded against C90 by, say,
#if defined __STDC_VERSION__ \
&& __STDC_VERSION__ >= 199900 \
&& !defined __cplusplus
or similar.
Likewise for other places that use long long, if any.
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