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(parse_number, yylex), cccp.c (rescan), cpplib.c

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(parse_number, yylex), cccp.c (rescan), cpplib.c
(cpp_get_token): Unless -lang-c89 is specified, allow C9X-style
hexadecimal floating-point numbers as preprocessor numbers.

From-SVN: r13746
This commit is contained in:
Richard Kenner 1997-03-19 16:57:58 -05:00
parent b415e1000b
commit 21c24d8861
1 changed files with 7 additions and 2 deletions
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9
gcc/cexp.y
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@ -161,6 +161,9 @@ extern int pedantic;
/* Flag for -traditional. */
extern int traditional;
/* Flag for -lang-c89. */
extern int c89;
#ifndef CHAR_TYPE_SIZE
#define CHAR_TYPE_SIZE BITS_PER_UNIT
#endif
@ -531,7 +534,7 @@ parse_number (olen)
yylval.integer.signedp = UNSIGNED;
}
else {
if (c == '.' || c == 'e' || c == 'E')
if (c == '.' || c == 'e' || c == 'E' || c == 'p' || c == 'P')
yyerror ("Floating point numbers not allowed in #if expressions");
else {
char *buf = (char *) alloca (p - lexptr + 40);
@ -834,7 +837,9 @@ yylex ()
for (namelen = 1; ; namelen++) {
int d = tokstart[namelen];
if (! ((is_idchar[d] || d == '.')
|| ((d == '-' || d == '+') && (c == 'e' || c == 'E')
|| ((d == '-' || d == '+')
&& (c == 'e' || c == 'E'
|| ((c == 'p' || c == 'P') && ! c89))
&& ! traditional)))
break;
c = d;