scc

Simple C99 Compiler
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commit beac8a2f180a7bb9941b20f39339d12d2b5582c9
parent ec024fa76037859d683d2befaee81b93e586fea1
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Tue, 12 May 2015 08:02:49 +0200

Allow empty preprocessor directives

C standard allows it, I don't knwo why.

Diffstat:
cc1/cpp.c | 6+++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cc1/cpp.c b/cc1/cpp.c @@ -273,9 +273,12 @@ preprocessor(char *p) return p; for (++p; isspace(*p); ++p) /* nothing */; + if (*p == '\0') + return NULL; for (q = p; isalpha(*q); ++q) /* nothing */; - n = q - p; + if ((n = q - p) == 0) + goto incorrect; while (isspace(*q)) ++q; for (bp = cmds; bp->name; ++bp) { @@ -288,5 +291,6 @@ preprocessor(char *p) error("trailing characters after preprocessor directive"); return NULL; } +incorrect: error("incorrect preprocessor directive"); }