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| author | Brian Foley | 2019-09-05 10:46:22 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2019-09-05 10:46:22 +0200 |
| commit | 7454879a1d9e3948a9af21e31e9d59d5ae8b89f2 (patch) | |
| tree | bf127bd4540a12f52ff6af0a0260b7a1f3222149 /miscutils | |
| parent | 22a633962786a7bc97870ced913fc237143cfd68 (diff) | |
| download | busybox-7454879a1d9e3948a9af21e31e9d59d5ae8b89f2.zip busybox-7454879a1d9e3948a9af21e31e9d59d5ae8b89f2.tar.gz | |
dc: execute shouldn't pop if stack head is not a string
This matches the behaviour of both GNU dc (as specified in
its man page), and BSD dc (where stack_popstring() pops
only if the head is a string.)
Add a couple of tests to verify this behavior.
function old new delta
zxc_vm_process 6882 6884 +2
Signed-off-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'miscutils')
| -rw-r--r-- | miscutils/bc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c index 7ac30dd..4a3ae49 100644 --- a/miscutils/bc.c +++ b/miscutils/bc.c @@ -6521,7 +6521,7 @@ static BC_STATUS zdc_program_execStr(char *code, size_t *bgn, bool cond) if (s || !BC_PROG_STR(n)) goto exit; sidx = n->rdx; } else - goto exit; + goto exit_nopop; } fidx = sidx + BC_PROG_REQ_FUNCS; @@ -6561,6 +6561,7 @@ static BC_STATUS zdc_program_execStr(char *code, size_t *bgn, bool cond) RETURN_STATUS(BC_STATUS_SUCCESS); exit: bc_vec_pop(&G.prog.results); + exit_nopop: RETURN_STATUS(s); } #define zdc_program_execStr(...) (zdc_program_execStr(__VA_ARGS__) COMMA_SUCCESS) |