Fix intermittent segfault in GD library

The gdIOCtx struct should be zero filled with ecalloc.
emalloc does not zero fill the struct.

diff --git a/ext/gd/gd_ctx.c b/ext/gd/gd_ctx.c
index dd62c636648ea33d2f401f129f0ccc7a7c5dae6e..388d66106e9e3715f1390f31948ca28ec01e6d64 100644 (file)
--- a/ext/gd/gd_ctx.c
+++ b/ext/gd/gd_ctx.c
@@ -152,7 +152,7 @@ static void _php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS, int image_type,
                        RETURN_FALSE;
                }
        } else {
-               ctx = emalloc(sizeof(gdIOCtx));
+               ctx = ecalloc(1, sizeof(gdIOCtx));
                ctx->putC = _php_image_output_putc;
                ctx->putBuf = _php_image_output_putbuf;
                ctx->gd_free = _php_image_output_ctxfree;
@@ -165,7 +165,7 @@ static void _php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS, int image_type,
        }
 
        if (!ctx)       {
-               ctx = emalloc(sizeof(gdIOCtx));
+               ctx = ecalloc(1, sizeof(gdIOCtx));
                ctx->putC = _php_image_stream_putc;
                ctx->putBuf = _php_image_stream_putbuf;
                if (close_stream) {