.gitignore

-main.o
-main

.gitlab-ci.yml

+image: alpine:latest
+
+test:
+  script:
+    - apk add gcc binutils
+    - ld --version
+    - gcc -Wall -Wextra -c bug.c
+    - ld -Tbug.ld -q bug.o -o bug

Makefile

-ARCH_DEPENDENT  = arm-none-eabi-
-
-CC              = $(ARCH_DEPENDENT)gcc
-LD              = $(ARCH_DEPENDENT)ld
-
-CFLAGS_COMMON   = -Wall
-CFLAGS_COMMON  += -Wextra
-CFLAGS_COMMON  += -Werror
-CFLAGS_COMMON  += -mthumb
-CFLAGS_COMMON  += -mcpu=cortex-m4
-
-CFLAGS_PIC      = $(CFLAGS_COMMON)
-#CFLAGS_PIC     += -msingle-pic-base
-#CFLAGS_PIC     += -mpic-register=r10
-#CFLAGS_PIC     += -mno-pic-data-is-text-relative
-#CFLAGS_PIC     += -fPIC
-
-LDFLAGS         = -Tlink.ld
-LDFLAGS        += -q
-
-SRC             = main.c
-OBJ             = $(SRC:.c=.o)
-
-EXEC            = main
-
-all: $(EXEC)
-
-$(EXEC): $(OBJ)
-	$(LD) $(LDFLAGS) $^ -o $@
-
-%.o: %.c
-	$(CC) $(CFLAGS_PIC) -c $< -o $@
-
-realclean:
-	rm -f $(EXEC) $(OBJ)
-
-.PHONY: all realclean

bug.c

+void *ptr = &ptr;

bug.ld

+SECTIONS
+{
+	.rel : { *(.data*) }
+}

link.ld

-ENTRY(main)
-
-SECTIONS
-{
-	.text :
-	{
-		*(.text*)
-	}
-
-	.relocate :
-	{
-		*(.data*)
-	}
-}

main.c

-int foovar = 5;
-int *fooptr = &foovar;
-
-int main()
-{
-	return 0;
-}