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-rw-r--r--lib/erl_interface/src/misc/ei_format.c4
-rw-r--r--lib/erl_interface/test/ei_format_SUITE.erl2
-rw-r--r--lib/erl_interface/test/ei_format_SUITE_data/ei_format_test.c2
3 files changed, 6 insertions, 2 deletions
diff --git a/lib/erl_interface/src/misc/ei_format.c b/lib/erl_interface/src/misc/ei_format.c
index 08235d0ebe..b35421d4b2 100644
--- a/lib/erl_interface/src/misc/ei_format.c
+++ b/lib/erl_interface/src/misc/ei_format.c
@@ -106,6 +106,8 @@ static int eiformat(const char** fmt, union arg** args, ei_x_buff* x)
default:
if (isdigit((int)*p))
res = pdigit(&p, x);
+ else if ((*p == '-' || *p == '+') && isdigit((int)*(p+1)))
+ res = pdigit(&p, x);
else if (islower((int)*p))
res = patom(&p, x);
else
@@ -149,6 +151,8 @@ static int pdigit(const char** fmt, ei_x_buff* x)
double d;
long l;
+ if (**fmt == '-' || **fmt == '+')
+ (*fmt)++;
for (;;) {
c = *(*fmt)++;
if (isdigit((int)c))
diff --git a/lib/erl_interface/test/ei_format_SUITE.erl b/lib/erl_interface/test/ei_format_SUITE.erl
index 7871f07ae9..cbe9fa52d7 100644
--- a/lib/erl_interface/test/ei_format_SUITE.erl
+++ b/lib/erl_interface/test/ei_format_SUITE.erl
@@ -155,7 +155,7 @@ format_wo_ver(suite) -> [];
format_wo_ver(Config) when is_list(Config) ->
?line P = runner:start(?format_wo_ver),
- ?line {term, [{a, "b"}, {c, 10}]} = get_term(P),
+ ?line {term, [-1, 2, {a, "b"}, {c, 10}]} = get_term(P),
?line runner:recv_eot(P),
ok.
diff --git a/lib/erl_interface/test/ei_format_SUITE_data/ei_format_test.c b/lib/erl_interface/test/ei_format_SUITE_data/ei_format_test.c
index a969ded3dc..ecdce402f5 100644
--- a/lib/erl_interface/test/ei_format_SUITE_data/ei_format_test.c
+++ b/lib/erl_interface/test/ei_format_SUITE_data/ei_format_test.c
@@ -176,7 +176,7 @@ TESTCASE(format_wo_ver) {
ei_x_buff x;
ei_x_new (&x);
- ei_x_format(&x, "[{~a,~s},{~a,~i}]", "a", "b", "c", 10);
+ ei_x_format(&x, "[-1, +2, {~a,~s},{~a,~i}]", "a", "b", "c", 10);
send_bin_term(&x);
free(x.buff);