Fix ifeq with undefined variables

2 files changed, 12 insertions, 4 deletions

diff --git a/Makefile b/Makefile
index 96e5141..c419a9a 100644
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,12 @@ BINDIR ?= /bin
 
 CFLAGS = -std=c99 -Wunused-variable -Wunused-function -Wconversion
 
+ifeq ($(DEBUG),1)
+CFLAGS += -Og -g
+else
+CFLAGS += -O2
+endif
+
 all: tmpl
 
 clean:
diff --git a/main.c b/main.c
index b5121ab..f8d2ab0 100644
--- a/main.c
+++ b/main.c
@@ -107,10 +107,12 @@ template(char *line)
 		stack[stack_top].type = IFEQ;
 		if (!stack_top || stack[stack_top-1].active) {
 			value = getvar(line + 6);
-			sep = strchr(line + 6, ' ');
-			if (!sep) die("invalid #ifeq\n%lu: %s", lineno, line);
-			if (!strcmp(value, sep + 1)) {
-				stack[stack_top].active = 1;
+			if (value) {
+				sep = strchr(line + 6, ' ');
+				if (!sep) die("invalid #ifeq\n%lu: %s",
+					lineno, line);
+				if (!strcmp(value, sep + 1))
+					stack[stack_top].active = 1;
 			}
 		}
 		stack_top++;