diff options
Diffstat (limited to 'mesalib/src/glsl/glcpp/glcpp-lex.l')
| -rw-r--r-- | mesalib/src/glsl/glcpp/glcpp-lex.l | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/mesalib/src/glsl/glcpp/glcpp-lex.l b/mesalib/src/glsl/glcpp/glcpp-lex.l index 98d500ec0..fa9aa5069 100644 --- a/mesalib/src/glsl/glcpp/glcpp-lex.l +++ b/mesalib/src/glsl/glcpp/glcpp-lex.l @@ -289,8 +289,14 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]? } /* Swallow empty #pragma directives, (to avoid confusing the - * downstream compiler). */ -<HASH>pragma{HSPACE}*/{NEWLINE} { + * downstream compiler). + * + * Note: We use a simple regular expression for the lookahead + * here. Specifically, we cannot use the complete {NEWLINE} expression + * since it uses alternation and we've found that there's a flex bug + * where using alternation in the lookahead portion of a pattern + * triggers a buffer overrun. */ +<HASH>pragma{HSPACE}*/[\r\n] { BEGIN INITIAL; } |