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doc: work around Flex's use of 'register'

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The CI uses an old version of Flex.

* doc/bison.texi (calc++/scanner.ll): Here.
This commit is contained in:
Akim Demaille
2018-09-17 05:54:23 +02:00
parent 7c64b1f4ff
commit 65fa634cdc
1 changed files with 12 additions and 5 deletions
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17
doc/bison.texi
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@@ -11422,10 +11422,9 @@ then the parser's to get the set of defined tokens.
@comment file: calc++/scanner.ll
@example
%@{
// Work around an incompatibility in flex (at least versions
// 2.5.31 through 2.5.33): it generates code that does
// not conform to C89. See Debian bug 333231
// <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=333231>.
// Work around an incompatibility in flex (at least versions 2.5.31 through
// 2.5.33): it generates code that does not conform to C89. See Debian bug
// 333231 <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=333231>.
# undef yywrap
# define yywrap() 1
@@ -11435,6 +11434,8 @@ then the parser's to get the set of defined tokens.
# pragma GCC diagnostic ignored "-Wnull-dereference"
#endif
#define FLEX_VERSION (YY_FLEX_MAJOR_VERSION * 100 + YY_FLEX_MINOR_VERSION)
// Old versions of Flex (2.5.35) generate an incomplete documentation comment.
//
// In file included from src/scan-code-c.c:3:
@@ -11443,9 +11444,15 @@ then the parser's to get the set of defined tokens.
// * @param line_number
// ~~~~~~~~~~~~~~~~~^
// 1 error generated.
#if YY_FLEX_MAJOR_VERSION * 1000 + YY_FLEX_MINOR_VERSION <= 2006 && defined __clang__
#if FLEX_VERSION < 206 && defined __clang__
# pragma clang diagnostic ignored "-Wdocumentation"
#endif
// Old versions of Flex (2.5.35) use 'register'. Warnings introduced in
// GCC 7.
#if FLEX_VERSION < 206 && defined __GNUC__ && !defined __clang__ && 7 <= __GNUC__
# pragma GCC diagnostic ignored "-Wregister"
#endif
%@}
@end example
@end ignore