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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen staging] tools/libxl: disable clang indentation check for the disk parser
commit 190c60f12db469472476041ecd0e6c9a0d4b0f8a
Author: Roger Pau Monne <roger.pau@xxxxxxxxxx>
AuthorDate: Tue May 5 11:24:54 2020 +0200
Commit: Wei Liu <wl@xxxxxxx>
CommitDate: Sun May 10 13:02:18 2020 +0100
tools/libxl: disable clang indentation check for the disk parser
Clang 10 complains with:
13: error: misleading indentation; statement is not part of the previous
'if'
[-Werror,-Wmisleading-indentation]
if ( ! yyg->yy_state_buf )
^
libxlu_disk_l.c:1259:9: note: previous statement is here
if ( ! yyg->yy_state_buf )
^
Due to the missing braces in single line statements and the wrong
indentation. Fix this by disabling the warning for that specific file.
I haven't found a way to force flex to add braces around single line
statements in conditional blocks.
Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
[ wei: regenerate output files ]
Acked-by: Wei Liu <wl@xxxxxxx>
---
tools/libxl/libxlu_disk_l.c | 97 +++++++++++++++++++++++++--------------------
tools/libxl/libxlu_disk_l.h | 2 +-
tools/libxl/libxlu_disk_l.l | 11 +++++
3 files changed, 66 insertions(+), 44 deletions(-)
diff --git a/tools/libxl/libxlu_disk_l.c b/tools/libxl/libxlu_disk_l.c
index b0ac3a865a..05f7ac74a0 100644
--- a/tools/libxl/libxlu_disk_l.c
+++ b/tools/libxl/libxlu_disk_l.c
@@ -1074,6 +1074,17 @@ goto find_rule; \
#define YY_NO_INPUT
+/* The code generated by flex is missing braces in single line expressions and
+ * is not properly indented, which triggers the clang misleading-indentation
+ * check that has been made part of -Wall since clang 10. In order to safely
+ * disable it on clang versions that don't have the diagnostic implemented
+ * also disable the unknown option and pragma warning. */
+#ifdef __clang__
+# pragma clang diagnostic ignored "-Wunknown-pragmas"
+# pragma clang diagnostic ignored "-Wunknown-warning-option"
+# pragma clang diagnostic ignored "-Wmisleading-indentation"
+#endif
+
/* Some versions of flex have a bug (Fedora bugzilla 612465) which causes
* it to fail to declare these functions, which it defines. So declare
* them ourselves. Hopefully we won't have to simultaneously support
@@ -1188,9 +1199,9 @@ static int vdev_and_devtype(DiskParseContext *dpc, char
*str) {
#undef DPC /* needs to be defined differently the actual lexer */
#define DPC ((DiskParseContext*)yyextra)
-#line 1192 "libxlu_disk_l.c"
+#line 1203 "libxlu_disk_l.c"
-#line 1194 "libxlu_disk_l.c"
+#line 1205 "libxlu_disk_l.c"
#define INITIAL 0
#define LEXERR 1
@@ -1466,13 +1477,13 @@ YY_DECL
}
{
-#line 166 "libxlu_disk_l.l"
+#line 177 "libxlu_disk_l.l"
-#line 169 "libxlu_disk_l.l"
+#line 180 "libxlu_disk_l.l"
/*----- the scanner rules which do the parsing -----*/
-#line 1476 "libxlu_disk_l.c"
+#line 1487 "libxlu_disk_l.c"
while ( /*CONSTCOND*/1 ) /* loops until end-of-file is
reached */
{
@@ -1561,135 +1572,135 @@ do_action: /* This label is used only to access
EOF actions. */
case 1:
/* rule 1 can match eol */
YY_RULE_SETUP
-#line 171 "libxlu_disk_l.l"
+#line 182 "libxlu_disk_l.l"
{ /* ignore whitespace before parameters */ }
YY_BREAK
/* ordinary parameters setting enums or strings */
case 2:
/* rule 2 can match eol */
YY_RULE_SETUP
-#line 175 "libxlu_disk_l.l"
+#line 186 "libxlu_disk_l.l"
{ STRIP(','); setformat(DPC, FROMEQUALS); }
YY_BREAK
case 3:
YY_RULE_SETUP
-#line 177 "libxlu_disk_l.l"
+#line 188 "libxlu_disk_l.l"
{ DPC->disk->is_cdrom = 1; }
YY_BREAK
case 4:
YY_RULE_SETUP
-#line 178 "libxlu_disk_l.l"
+#line 189 "libxlu_disk_l.l"
{ DPC->disk->is_cdrom = 1; }
YY_BREAK
case 5:
YY_RULE_SETUP
-#line 179 "libxlu_disk_l.l"
+#line 190 "libxlu_disk_l.l"
{ DPC->disk->is_cdrom = 0; }
YY_BREAK
case 6:
/* rule 6 can match eol */
YY_RULE_SETUP
-#line 180 "libxlu_disk_l.l"
+#line 191 "libxlu_disk_l.l"
{ xlu__disk_err(DPC,yytext,"unknown value for type"); }
YY_BREAK
case 7:
/* rule 7 can match eol */
YY_RULE_SETUP
-#line 182 "libxlu_disk_l.l"
+#line 193 "libxlu_disk_l.l"
{ STRIP(','); setaccess(DPC, FROMEQUALS); }
YY_BREAK
case 8:
/* rule 8 can match eol */
YY_RULE_SETUP
-#line 183 "libxlu_disk_l.l"
+#line 194 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("backend", backend_domname, FROMEQUALS); }
YY_BREAK
case 9:
/* rule 9 can match eol */
YY_RULE_SETUP
-#line 184 "libxlu_disk_l.l"
+#line 195 "libxlu_disk_l.l"
{ STRIP(','); setbackendtype(DPC,FROMEQUALS); }
YY_BREAK
case 10:
/* rule 10 can match eol */
YY_RULE_SETUP
-#line 186 "libxlu_disk_l.l"
+#line 197 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("vdev", vdev, FROMEQUALS); }
YY_BREAK
case 11:
/* rule 11 can match eol */
YY_RULE_SETUP
-#line 187 "libxlu_disk_l.l"
+#line 198 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("script", script, FROMEQUALS); }
YY_BREAK
case 12:
YY_RULE_SETUP
-#line 188 "libxlu_disk_l.l"
+#line 199 "libxlu_disk_l.l"
{ DPC->disk->direct_io_safe = 1; }
YY_BREAK
case 13:
YY_RULE_SETUP
-#line 189 "libxlu_disk_l.l"
+#line 200 "libxlu_disk_l.l"
{ libxl_defbool_set(&DPC->disk->discard_enable, true); }
YY_BREAK
case 14:
YY_RULE_SETUP
-#line 190 "libxlu_disk_l.l"
+#line 201 "libxlu_disk_l.l"
{ libxl_defbool_set(&DPC->disk->discard_enable, false); }
YY_BREAK
/* Note that the COLO configuration settings should be considered unstable.
* They may change incompatibly in future versions of Xen. */
case 15:
YY_RULE_SETUP
-#line 193 "libxlu_disk_l.l"
+#line 204 "libxlu_disk_l.l"
{ libxl_defbool_set(&DPC->disk->colo_enable, true); }
YY_BREAK
case 16:
YY_RULE_SETUP
-#line 194 "libxlu_disk_l.l"
+#line 205 "libxlu_disk_l.l"
{ libxl_defbool_set(&DPC->disk->colo_enable, false); }
YY_BREAK
case 17:
/* rule 17 can match eol */
YY_RULE_SETUP
-#line 195 "libxlu_disk_l.l"
+#line 206 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("colo-host", colo_host, FROMEQUALS); }
YY_BREAK
case 18:
/* rule 18 can match eol */
YY_RULE_SETUP
-#line 196 "libxlu_disk_l.l"
+#line 207 "libxlu_disk_l.l"
{ STRIP(','); setcoloport(DPC, FROMEQUALS); }
YY_BREAK
case 19:
/* rule 19 can match eol */
YY_RULE_SETUP
-#line 197 "libxlu_disk_l.l"
+#line 208 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("colo-export", colo_export, FROMEQUALS); }
YY_BREAK
case 20:
/* rule 20 can match eol */
YY_RULE_SETUP
-#line 198 "libxlu_disk_l.l"
+#line 209 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("active-disk", active_disk, FROMEQUALS); }
YY_BREAK
case 21:
/* rule 21 can match eol */
YY_RULE_SETUP
-#line 199 "libxlu_disk_l.l"
+#line 210 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("hidden-disk", hidden_disk, FROMEQUALS); }
YY_BREAK
/* the target magic parameter, eats the rest of the string */
case 22:
YY_RULE_SETUP
-#line 203 "libxlu_disk_l.l"
+#line 214 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("target", pdev_path, FROMEQUALS); }
YY_BREAK
/* unknown parameters */
case 23:
/* rule 23 can match eol */
YY_RULE_SETUP
-#line 207 "libxlu_disk_l.l"
+#line 218 "libxlu_disk_l.l"
{ xlu__disk_err(DPC,yytext,"unknown parameter"); }
YY_BREAK
/* deprecated prefixes */
@@ -1697,7 +1708,7 @@ YY_RULE_SETUP
* matched the whole string, so these patterns take precedence */
case 24:
YY_RULE_SETUP
-#line 214 "libxlu_disk_l.l"
+#line 225 "libxlu_disk_l.l"
{
STRIP(':');
DPC->had_depr_prefix=1; DEPRECATE("use `[format=]...,'");
@@ -1706,7 +1717,7 @@ YY_RULE_SETUP
YY_BREAK
case 25:
YY_RULE_SETUP
-#line 220 "libxlu_disk_l.l"
+#line 231 "libxlu_disk_l.l"
{
char *newscript;
STRIP(':');
@@ -1725,12 +1736,12 @@ case 26:
yyg->yy_c_buf_p = yy_cp = yy_bp + 8;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 233 "libxlu_disk_l.l"
+#line 244 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 27:
YY_RULE_SETUP
-#line 234 "libxlu_disk_l.l"
+#line 245 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 28:
@@ -1738,7 +1749,7 @@ case 28:
yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 235 "libxlu_disk_l.l"
+#line 246 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 29:
@@ -1746,7 +1757,7 @@ case 29:
yyg->yy_c_buf_p = yy_cp = yy_bp + 6;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 236 "libxlu_disk_l.l"
+#line 247 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 30:
@@ -1754,7 +1765,7 @@ case 30:
yyg->yy_c_buf_p = yy_cp = yy_bp + 5;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 237 "libxlu_disk_l.l"
+#line 248 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 31:
@@ -1762,13 +1773,13 @@ case 31:
yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 238 "libxlu_disk_l.l"
+#line 249 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 32:
/* rule 32 can match eol */
YY_RULE_SETUP
-#line 240 "libxlu_disk_l.l"
+#line 251 "libxlu_disk_l.l"
{
xlu__disk_err(DPC,yytext,"unknown deprecated disk prefix");
return 0;
@@ -1778,7 +1789,7 @@ YY_RULE_SETUP
case 33:
/* rule 33 can match eol */
YY_RULE_SETUP
-#line 247 "libxlu_disk_l.l"
+#line 258 "libxlu_disk_l.l"
{
STRIP(',');
@@ -1807,7 +1818,7 @@ YY_RULE_SETUP
YY_BREAK
case 34:
YY_RULE_SETUP
-#line 273 "libxlu_disk_l.l"
+#line 284 "libxlu_disk_l.l"
{
BEGIN(LEXERR);
yymore();
@@ -1815,17 +1826,17 @@ YY_RULE_SETUP
YY_BREAK
case 35:
YY_RULE_SETUP
-#line 277 "libxlu_disk_l.l"
+#line 288 "libxlu_disk_l.l"
{
xlu__disk_err(DPC,yytext,"bad disk syntax"); return 0;
}
YY_BREAK
case 36:
YY_RULE_SETUP
-#line 280 "libxlu_disk_l.l"
+#line 291 "libxlu_disk_l.l"
YY_FATAL_ERROR( "flex scanner jammed" );
YY_BREAK
-#line 1829 "libxlu_disk_l.c"
+#line 1840 "libxlu_disk_l.c"
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(LEXERR):
yyterminate();
@@ -2930,4 +2941,4 @@ void yyfree (void * ptr , yyscan_t yyscanner)
#define YYTABLES_NAME "yytables"
-#line 280 "libxlu_disk_l.l"
+#line 291 "libxlu_disk_l.l"
diff --git a/tools/libxl/libxlu_disk_l.h b/tools/libxl/libxlu_disk_l.h
index 9275a3ab55..54f4662d7a 100644
--- a/tools/libxl/libxlu_disk_l.h
+++ b/tools/libxl/libxlu_disk_l.h
@@ -694,7 +694,7 @@ extern int yylex (yyscan_t yyscanner);
#undef yyTABLES_NAME
#endif
-#line 280 "libxlu_disk_l.l"
+#line 291 "libxlu_disk_l.l"
#line 700 "libxlu_disk_l.h"
#undef xlu__disk_yyIN_HEADER
diff --git a/tools/libxl/libxlu_disk_l.l b/tools/libxl/libxlu_disk_l.l
index 97039a2800..7a46f4a30c 100644
--- a/tools/libxl/libxlu_disk_l.l
+++ b/tools/libxl/libxlu_disk_l.l
@@ -36,6 +36,17 @@
#define YY_NO_INPUT
+/* The code generated by flex is missing braces in single line expressions and
+ * is not properly indented, which triggers the clang misleading-indentation
+ * check that has been made part of -Wall since clang 10. In order to safely
+ * disable it on clang versions that don't have the diagnostic implemented
+ * also disable the unknown option and pragma warning. */
+#ifdef __clang__
+# pragma clang diagnostic ignored "-Wunknown-pragmas"
+# pragma clang diagnostic ignored "-Wunknown-warning-option"
+# pragma clang diagnostic ignored "-Wmisleading-indentation"
+#endif
+
/* Some versions of flex have a bug (Fedora bugzilla 612465) which causes
* it to fail to declare these functions, which it defines. So declare
* them ourselves. Hopefully we won't have to simultaneously support
--
generated by git-patchbot for /home/xen/git/xen.git#staging
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