Mesa (master): glsl/glcpp: Fix #pragma to not over-increment the line-number count
Ian Romanick
idr at kemper.freedesktop.org
Thu Aug 7 23:08:46 UTC 2014
Module: Mesa
Branch: master
Commit: bf9bce5bea17e8034927e34bcafa4c694790d9b9
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=bf9bce5bea17e8034927e34bcafa4c694790d9b9
Author: Carl Worth <cworth at cworth.org>
Date: Wed Jul 2 10:27:50 2014 -0700
glsl/glcpp: Fix #pragma to not over-increment the line-number count
Previously, the #pragma directive was swallowing an entire line, (including
the final newline). At that time it was appropriate for it to increment the
line count.
More recently, our handling of #pragma changed to not include the newline. But
the code to increment yylineno stuck around. This was causing __LINE__ to be
increased by one more than desired for every #pragma.
Remove the bogus, extra increment, and add a test for this case.
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
---
src/glsl/glcpp/glcpp-lex.l | 2 --
src/glsl/glcpp/tests/141-pragma-and-__LINE__.c | 6 ++++++
src/glsl/glcpp/tests/141-pragma-and-__LINE__.c.expected | 6 ++++++
3 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/src/glsl/glcpp/glcpp-lex.l b/src/glsl/glcpp/glcpp-lex.l
index 2b92fd3..430abd4 100644
--- a/src/glsl/glcpp/glcpp-lex.l
+++ b/src/glsl/glcpp/glcpp-lex.l
@@ -291,8 +291,6 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]?
* Simply pass them through to the main compiler's lexer/parser. */
<HASH>(extension|pragma)[^\r\n]* {
BEGIN INITIAL;
- yylineno++;
- yycolumn = 0;
RETURN_STRING_TOKEN (PRAGMA);
}
diff --git a/src/glsl/glcpp/tests/141-pragma-and-__LINE__.c b/src/glsl/glcpp/tests/141-pragma-and-__LINE__.c
new file mode 100644
index 0000000..a93f3ce
--- /dev/null
+++ b/src/glsl/glcpp/tests/141-pragma-and-__LINE__.c
@@ -0,0 +1,6 @@
+Line 1 /* Test for a bug where #pragma was throwing off the __LINE__ count. */
+Line __LINE__ /* Line 2 */
+#pragma Line 3
+Line __LINE__ /* Line 4 */
+#pragma Line 5
+Line __LINE__ /* Line 6 */
diff --git a/src/glsl/glcpp/tests/141-pragma-and-__LINE__.c.expected b/src/glsl/glcpp/tests/141-pragma-and-__LINE__.c.expected
new file mode 100644
index 0000000..330731d
--- /dev/null
+++ b/src/glsl/glcpp/tests/141-pragma-and-__LINE__.c.expected
@@ -0,0 +1,6 @@
+Line 1
+Line 2
+#pragma Line 3
+Line 4
+#pragma Line 5
+Line 6
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