diff options
Diffstat (limited to 'unit-tests/varmod-loop-delete.mk')
| -rw-r--r-- | unit-tests/varmod-loop-delete.mk | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/unit-tests/varmod-loop-delete.mk b/unit-tests/varmod-loop-delete.mk index 478a25e91f6e..7b7dc0a77b25 100644 --- a/unit-tests/varmod-loop-delete.mk +++ b/unit-tests/varmod-loop-delete.mk @@ -1,4 +1,4 @@ -# $NetBSD: varmod-loop-delete.mk,v 1.7 2024/08/29 20:20:36 rillig Exp $ +# $NetBSD: varmod-loop-delete.mk,v 1.9 2026/02/09 22:04:54 rillig Exp $ # # Tests for the variable modifier ':@', which as a side effect allows to # delete an arbitrary variable. @@ -11,6 +11,17 @@ # # See Var_Parse, comment 'the value of the variable must not change'. +all: .PHONY + ${MAKE} -f ${MAKEFILE} delete-active-variable || true + @echo + ${MAKE} -f ${MAKEFILE} delete-active-variable-in-target || true + @echo + # Disabled since the details of the crash depend on the execution + # environment. + #${MAKE} -f ${MAKEFILE} use-after-free + +delete-active-variable: .PHONY +.if make(delete-active-variable) # Set up the variable that deletes itself when it is evaluated. VAR= ${:U:@VAR@@} rest of the value @@ -18,12 +29,16 @@ VAR= ${:U:@VAR@@} rest of the value # defined in the global scope, it deletes itself. # expect+1: Cannot delete variable "VAR" while it is used EVAL:= ${VAR} -.if ${EVAL} != " rest of the value" -. error +. if ${EVAL} != " rest of the value" +. error +. endif .endif +delete-active-variable-in-target: .PHONY +.if make(delete-active-variable-in-target) VAR= ${:U:@VAR@@} rest of the value -all: .PHONY + +delete-active-variable-in-target: # In the command that is associated with a target, the scope is the # one from the target. That scope only contains a few variables like # '.TARGET', '.ALLSRC', '.IMPSRC'. Make does not expect that these @@ -32,3 +47,28 @@ all: .PHONY # There is no variable named 'VAR' in the local scope, so nothing # happens. : $@: '${VAR}' +# expect: : delete-active-variable-in-target: ' rest of the value' +.endif + + +# On NetBSD 11.99.x with jemalloc and MALLOC_CONF=junk:true, the output is: +# make: varmod-loop-delete.mk:72: Unknown modifier ":Z2" +# while evaluating "${:U 333 :@v@...${:Z1}@:Z2}" with value "...${:Z1}" +# while evaluating variable "INNER.1" with value "${:U 333 :@v@...${:Z1}@:Z2}" +# while evaluating variable "ZZZZZZZZZZZZ...${:Z1}" with value "ZZZZZZZZ" +# while evaluating "${:U 111 222 :@v@${v:S,^,${INNER.1},}@}" with value " 111 222 " +# while evaluating variable "OUTER" with value "${:U 111 222 :@v@${v:S,^,${INNER.1},}@}" +# in make in directory "<curdir>" +# Modifier part: "" +# ModifyWords: split "ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ" into 1 word +# Result of ${ZZZZZZZZZZZZ:S,^,${INNER.1},} is "ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ" (eval-keep-undefined, regular) +# Segmentation fault (core dumped) +use-after-free: .PHONY +.if make(use-after-free) +OUTER= ${:U 111 222 :@v@${v:S,^,${INNER.1},}@} +INNER.1= ${:U 333 :@v@...${:Z1}@:Z2} + +.MAKEFLAGS: -dcpv +_:= ${OUTER} +.MAKEFLAGS: -d0 +.endif |