Work around miscompilation bug with clang(1) 22.1.8

Original code works with '-Weverything' but crashes with '-Weverything -Og -g'

Assembly difference:

@@ -1752,7 +1752,7 @@
 .Ltmp210:
 	#DEBUG_VALUE: parse_line:i <- 1
 	.loc	0 58 23 is_stmt 1               # Blocks.parse.c:58:23 @[ ./parse-common.c:87:2 ]
-	movsbq	-1, %rdx
+	movsbq	-1(%rbp), %rdx
 .Ltmp211:
 	.loc	0 58 2 is_stmt 0                # Blocks.parse.c:58:2 @[ ./parse-common.c:87:2 ]
 	testb	$32, 1(%rax,%rdx,2)
@@ -1772,7 +1772,7 @@
 	#DEBUG_VALUE: parse_line:low <- $r13
 	#DEBUG_VALUE: parse_line:high <- $rsi
 	#DEBUG_VALUE: parse_line:i <- undef
-	.loc	0 59 12 is_stmt 1               # Blocks.parse.c:59:12 @[ ./parse-common.c:87:2 ]
+	.loc	0 59 15 is_stmt 1               # Blocks.parse.c:59:15 @[ ./parse-common.c:87:2 ]
 	movb	$0, (%rcx)
 	.loc	0 58 15                         # Blocks.parse.c:58:15 @[ ./parse-common.c:87:2 ]
 	movq	(%r12), %rax

Signed-off-by: Mattias Andrée <m@maandree.se>

1 files changed, 2 insertions, 2 deletions

diff --git a/Blocks.parse.c b/Blocks.parse.c
index d167b66..1ae9fa9 100644
--- a/Blocks.parse.c
+++ b/Blocks.parse.c
@@ -55,8 +55,8 @@ parse_line(char *text, size_t lineno)
 	name = text;
 	while (*text && *text != ';')
 		text++;
-	for (i = 1u; isspace(text[-i]); i++)
-		text[-i] = '\0';
+	for (i = 1u; isspace(*(text - i)); i++)
+		*(text - i) = '\0';
 
 	if (*text == ';') {
 		static int warned = 0;